| R&D (abbreviation, acronym) research and development department in a company that develops new products | railroad (noun) form plural: railroads path for a train made of parallel metal tracks |
| railroad (verb) forms: railroaded; railroaded; railroading to transport via locomotive; to convey by train | raise (noun) form plural: raises increase in salary; wage increase |
| raise (verb) forms: raised; raised; raising to elevate; to lift; to excite; to arouse; to cause | ranches (noun) form plural: ranches farm with large pasture land for raising livestock |
| randomly (adverb) accidentally; by chance | range (noun) form plural: ranges pasture; scope; extent; field; domain; assortment |
| range (verb) forms: ranged; ranged; ranging to determine the scope of a target; to extend; to stretch; to vary | rank (adjective) giving off a foul odor; fertile; productive; fruitful; growing vigorously |
| rank (verb) forms: ranked; ranked; ranking to arrange in a line; to grade; to classify | rapidly (adverb) quickly; fast; swiftly |
| rarely (adverb) infrequently; not often; seldom | rate (noun) form plural: rates price; cost; speed; pace; tax |
| rate (verb) forms: rated; rated; rating to assess; to appraise; to determine value; to grade; to classify; to sort | rather (adverb) very quite; to a degree; somewhat; slightly; a bit; might as well |
| rational (adjective) logical; reasonable; intelligent; prudent; expressible as a whole number (Mathematics) | reach (noun) form plural: reaches distance that an arm can extend |
| reach (verb) forms: reached; reached; reaching to arrive; to obtain; to procure; to extend the arm outward | readership (noun) form plural: readerships total number of people who subscribe to a particular publication |
| readiness (noun) form: no plural preparedness; willingness; promptness; quickness | ready (adjective) prepared; set; eager; willing; quick; fast |
| realization (noun) form plural: realizations accomplishment; fulfillment | realize (verb) forms: realized; realized; realizing to understand; to comprehend; to accomplish; to convert into cash; to liquidate |
| rear (adjective) back; hind | rear (noun) form plural: rears back end; hindmost unit of an army (or fleet, etc.) |
| reason (noun) form plural: reasons cause; basis for action; intelligence; sense | reason (verb) forms: reasoned; reasoned; reasoning to think; to consider logically; to argue; to claim |
| reasonable (adjective) rational; logical; intelligent; wise; plausible; likely; credible | rebound (noun) form plural: rebounds backlash |
| rebound (verb) forms: rebounded; rebounded; rebounding to spring back | rebuild (verb) forms: rebuilt; rebuilt; rebuilding to reconstruct; to erect again |
| recant (verb) forms: recanted; recanted; recanting to give up; to renounce; to deny; to disavow; to retract | recap (verb) forms: recapped; recapped; recapping to summarize; to review with a short summary |
| receipt (noun) form plural: receipts bill of sale; written statement of purchases | receipt (verb) forms: receipted; receipted; receipting to write a statement of purchases; to make a bill of sale |
| receive (verb) forms: received; received; receiving to get; to accept; to absorb; to take in; to host; to accommodate | recent (adjective) new; fresh; late; of late times |
| reception (noun) form plural: receptions acceptance; event in which guests are formally welcomed by their host; check-in | receptionist (noun) form plural: receptionists person who greets visitors or clients on the telephone and upon their arrival |
| recession (noun) form plural: recessions a significant decline in general economic activity extending over a period of time | recipient (noun) form plural: recipients person who accepts; person who takes or gets |
| reclaim (verb) forms: reclaimed; reclaimed; reclaiming to demand the return of property; to repossess | recognition (noun) form plural: recognitions acknowledgment; identification |
| recognizable (adjective) identifiable; determinable; able to be distinguished | recognize (verb) forms: recognized; recognized; recognizing to identify; to acknowledge; to know; to admit |
| recommend (verb) forms: recommended; recommended; recommending to advocate; to endorse; to speak well of; to advise; to suggest | recommendation (noun) form plural: recommendations endorsement; approval; letter of reference; suggestion; advice |
| reconsider (verb) forms: reconsidered; reconsidered; reconsidering to contemplate again | record (adjective) comprising the best result ever attained |
| record (noun) form plural: records list; evidence; best result ever attained; list of events or actions | recover (verb) forms: recovered; recovered; recovering to get well; to get back; to regain; to obtain again |
| recovery (noun) form plural: recoveries recuperation; getting well; return | recruit (noun) form plural: recruits new member of a group; new employee |
| recruit (verb) forms: recruited; recruited; recruiting to enlist or draft new members; to gain; to obtain; to procure | recruitment (noun) form plural: recruitments act of enlisting or drafting new members |
| rectangle (noun) form plural: rectangles parallelogram | rectify (verb) forms: rectified; rectified; rectifying to fix; to repair; to correct; to calibrate; to adjust |
| reduce (verb) forms: reduced; reduced; reducing to lessen; to diminish; to decrease | refer (verb) forms: referred; referred; referring to send; to direct; to ascribe to; to relate to; to apply to; to call attention to |
| reference (noun) form plural: references comment; remark; ascription; mention; regard | reference (verb) forms: referenced; referenced; referencing to add a footnote; to place a note that directs readers to another source of information (in a book, journal, etc.) |
| reflect (verb) forms: reflected; reflected; reflecting to mirror; to send back energy from a surface; to cause to return; to express | reflection (noun) form plural: reflections act of casting back a mirror image; act of sending back energy from a surface; idea; concept |
| refund (noun) form plural: refunds return of money; repayment; reimbursement | refund (verb) forms: refunded; refunded; refunding to return money; to reimburse; to repay; to finance again |
| refurbish (verb) forms: refurbished; refurbished; refurbishing to make new again; to renovate; to restore to good condition | refusal (noun) form plural: refusals denial; rejection |
| refuse (noun) form plural: refuses garbage; trash; waste | refuse (verb) forms: refused; refused; refusing to decline; to deny; to reject |
| regard (noun) form plural: regards esteem; respect; thought; consideration; look; glance | regard (verb) forms: regarded; regarded; regarding to look at; to concern; to relate to; to esteem; to appreciate; to consider |
| regarding (preposition) with relation to | regardless (adjective) inattentive; unmindful |
| regardless (adverb) without consideration for possible problems; anyway; in any case | region (noun) form plural: regions area; territory; domain; field; area of activity or interest; sphere |
| registering (noun) form plural: registers list; record; regulator; gauge | registering (verb) forms: registered; registered; registering to record; to enroll; to have an effect; to have influence |
| regress (verb) forms: regressed; regressed; regressing to move backward; to go back; to return to a previous condition | regular (adjective) occurring at fixed intervals; normal; usual; ordinary; common |
| regular (noun) form plural: regulars frequent customer; repeat customer | regularly (adverb) at fixed intervals; at evenly-spaced intervals; usually; customarily |
| regulate (verb) forms: regulated; regulated; regulating to control; to govern; to manage; to adjust to a specific level or condition | regulations (noun) form plural: regulations statute; law; act of controlling; management; direction |
| rehearsal (noun) form plural: rehearsals practice session for a performance | rehearse (verb) forms: rehearsed; rehearsed; rehearsing to drill; to practice an action repeatedly in order to perfect it |
| reimburse (verb) forms: reimbursed; reimbursed; reimbursing to repay; to refund; to compensate for a loss; to repay for an expense | reimbursement (noun) form plural: reimbursements act of paying back; repayment; compensation for a loss; repayment for an expense |
| reinforce (verb) forms: reinforced; reinforced; reinforcing to strengthen; to fortify; to support; to increase | reinforcement (noun) form plural: reinforcements act of strengthening; reward or punishment designed to encourage or discourage a particular response |
| reiterate (verb) forms: reiterated; reiterated; reiterating to repeat; to say again; to restate | reject (noun) form plural: rejects something or someone that does not match up to standards; object of lower quality; outcast |
| reject (verb) forms: rejected; rejected; rejecting to decline; to deny; to turn down | relate (verb) forms: related; related; relating to narrate; to tell; to make a connection between; to have a good relationship with |
| relation (noun) form plural: relations narration; act of telling; family member; connection; association | relationship (noun) form plural: relationships connection; association; closeness |
| release (noun) form plural: releases freedom; liberation; newly distributed film (or record, book, etc.); statement provided to the media | release (verb) forms: released; released; releasing to set free; to emancipate; to make available to the general public; to surrender |
| relevant (adjective) pertinent; related; connected to the current subject | reliable (adjective) credible; trustworthy; dependable |
| relief (noun) form plural: reliefs easement; alleviation; liberation; aid; assistance | relinquish (verb) forms: relinquished; relinquished; relinquishing to cede; to surrender; to give up; to forsake; to abandon |
| relocate (verb) forms: relocated; relocated; relocating to move to a different apartment; to move to a different place | rely (verb) forms: relied; relied; relying to depend on; to trust in |
| remain (verb) forms: remained; remained; remaining to stay; to abide; to continue; to go on | remark (noun) form plural: remarks comment; observation; notice |
| remark (verb) forms: remarked; remarked; remarking to notice; to observe; to comment; to state; to say | remarkable (adjective) striking; noteworthy; extraordinary; exceptional |
| remember (verb) forms: remembered; remembered; remembering to recall to the mind; to retain in one's mind; to have a recollection | remind (verb) forms: reminded; reminded; reminding to cause to remember |
| remit (noun) form plural: remits act of forgiving; discharging; dispatching | remit (verb) forms: remitted; remitted; remitting to forgive; to absolve; to release; to discharge |
| remote (adjective) distant; located far away; secluded; isolated; aloof | removal (noun) form plural: removals act of shedding; act of taking away; elimination; ejection; dismissal |
| remove (noun) form plural: removes degree of difference; promotion of a student to a higher grade | remove (verb) forms: removed; removed; removing to take off; to shed; to take away; to eliminate; to get rid of |
| render (verb) forms: rendered; rendered; rendering to give; to submit; to transform; to represent; to depict | renew (verb) forms: renewed; renewed; renewing to restore to good condition; to restart; to resume; to refresh |
| renovation (noun) form plural: renovations act of repairing; renewal; act of restoring to good condition | renowned (adjective) famous; prominent |
| rent (noun) form plural: rents money paid for the use of property; rip; tear; laceration | rent (verb) forms: rented; rented; renting to let; to allow someone to use property in return for regular payments; to hire |
| rental (adjective) available to lease or rent | rental (noun) form plural: rentals money paid for the use of property; property that is leased; act of leasing |
| repair (noun) form plural: repairs act of fixing; correction; act of mending | repair (verb) forms: repaired; repaired; repairing to fix; to mend; to correct a problem or malfunction |
| repeat (adjective) done over again | repeat (noun) form plural: repeats act of redoing something |
| repetition (noun) form plural: repetitions reiteration; act of redoing something | replace (verb) forms: replaced; replaced; replacing to substitute for; to return something to a particular position or location |
| replacement (noun) form plural: replacements substitution; substitute | replay (noun) form plural: replays rematch; repetition |
| replay (verb) forms: replayed; replayed; replaying to rebroadcast | reply (noun) form plural: replies answer; response |
| reply (verb) forms: replied; replied; replying to answer; to respond | repo (noun) form plural: repos agreement in which the seller of securities agrees to buy them back at a specified time and price |
| report (noun) form plural: reports detailed account of an occurrence or situation | report (verb) forms: reported; reported; reporting to provide a detailed statement about an occurrence or situation; inform |
| represent (verb) forms: represented; represented; representing to act as an agent on behalf of a person or organization; to symbolize | representative (adjective) typical; characteristic; acting on behalf of another person or organization |
| representative (noun) form plural: representatives delegate; agent; person who acts on behalf of another person or organization | reprove (verb) forms: reproved; reproved; reproving to accuse; to admonish |
| reputation (noun) form plural: reputations regard; esteem; renown | request (noun) form plural: requests petition; instance of asking for something; something that is asked for; object of a petition |
| request (verb) forms: requested; requested; requesting to ask for; to petition for | require (verb) forms: required; required; requiring to demand; to claim; to need; to call for; to order; to command |
| requirement (noun) form plural: requirements something that is demanded; necessity; something that is needed | reschedule (verb) forms: rescheduled; rescheduled; rescheduling to set a new time and date |
| rescue (noun) form plural: rescues deliverance; act of saving from danger or injury; act of freeing from risk | rescue (verb) forms: rescued; rescued; rescuing to save from harm; to deliver from danger; to free from risk |
| research (noun) form plural: researches comprehensive inquiry; extensive investigation of a subject | research (verb) forms: researched; researched; researching to perform a thorough investigation; to study a subject closely |
| resemble (verb) forms: resembled; resembled; resembling to be similar to; to be akin to; to look like; to have a similar appearance to | reservation (noun) form plural: reservations act of ordering in advance (hotel room, airline ticket, etc.) |
| reserve requirement (noun) form plural: reserve requirements minimum amount of money and liquid assets set by the central banking system of the U.S. | residence (noun) form plural: residences headquarters of a business; dwelling place; abode; home; domicile |
| resident (adjective) staying in a particular place; not migratory; intrinsic; existing | resident (noun) form plural: residents inhabitant; one who lives in a particular location |
| residential (adjective) intended for inhabitation; occupied with homes | residual (adjective) enduring; lasting; continuing; leftover; remaining |
| resign (verb) forms: resigned; resigned; resigning to quit an office or position; to relinquish; to give up; to abdicate | resignation (noun) form plural: resignations act of quitting a position; letter stating that one quits a position; relinquishment |
| resilience (noun) form: no plural elasticity; cheerfulness; quality of quickly recovering from sadness or failure; buoyancy | resist (noun) form plural: resists protective coating |
| resist (verb) forms: resisted; resisted; resisting to oppose; to fight against; to challenge; to withstand | resistance (noun) form plural: resistances opposition; act of fighting against; act of withstanding the effects of |
| resolute (adjective) determined; firm; steadfast | resolve (noun) form plural: resolves firm decision; ruling; decisiveness; determination |
| resolve (verb) forms: resolved; resolved; resolving to determine; to decide; to separate into constituent parts | resonate (verb) forms: resonated; resonated; resonating to echo |
| resource (noun) form plural: resources supply; stock; means of accomplishing a goal; expedient | respect (noun) form: no plural honor; esteem; high regard; consideration; attention |
| respect (verb) forms: respected; respected; respecting to honor; to admire; to esteem; to hold in high regard | respond (verb) forms: responded; responded; responding to answer; to reply; to react |
| response (noun) form plural: responses reply; answer; reaction | responsible (adjective) dependable; reliable; accountable; liable |
| responsive (adjective) answering; reacting (esp. positively or sympathetically) | restriction (noun) form plural: restrictions limitation; limit |
| resume (noun) form plural: resumes summary; synopsis; abstract; CV; curriculum vitae | resume (verb) forms: resumed; resumed; resuming to recommence; to begin again; to retake; to take back; to continue |
| retail (adjective) pertaining to the sale of goods to final consumers; of the sale of merchandise to end users | retail (noun) form plural: retails sale of products to final consumers; sale of goods to end users |
| retailer (noun) form plural: retailers person or business that sells goods to final consumers | reticent (adjective) keeping quiet; reserved; showing self-restraint |
| retire (verb) forms: retired; retired; retiring to withdraw from a position (usually due to old age); go into seclusion; to withdraw | retirement (noun) form plural: retirements withdrawal from one's job or occupation |
| retrieval (noun) form plural: retrievals act of bringing back; restoration; act of finding information and sending it to the user as output | retrieve (verb) forms: retrieved; retrieved; retrieving to recover; to regain; to bring back; to fetch; to rescue |
| return (adjective) reciprocal; done in response to a previous action; repeated; recurring | return (noun) form plural: returns act of giving back; reply; answer; profit; yield; repayment |
| reveal (verb) forms: revealed; revealed; revealing to show; to exhibit; to display; to expose; to disclose | revenue (noun) form plural: revenues income; return; gains; government income earned through taxation |
| revere (verb) forms: revered; revered; revering to respect deeply; to honor greatly | reverse (adjective) having the back side exposed to view; opposite; contrary |
| reverse (noun) form plural: reverses opposite; contrary; back side; rear; setback; defeat | review (noun) form plural: reviews survey; general study; examination; inspection |
| review (verb) forms: reviewed; reviewed; reviewing to survey; to conduct a general study; to inspect; to examine; to reconsider | revise (noun) form plural: revises act of making changes; alteration; proof sheet made to verify changes made and check for additional errors |
| revise (verb) forms: revised; revised; revising to make changes in order to improve something; to edit; to correct | revive (verb) forms: revived; revived; reviving to resuscitate; to bring back to life; to put into action again |
| revolve (verb) forms: revolved; revolved; revolving to rotate; to turn; to spin; to encircle; to think about; to contemplate | reward (noun) form plural: rewards prize; recompense; benefit received as payment for a service |
| reward (verb) forms: rewarded; rewarded; rewarding to recompense someone for a service | rigorous (adjective) harsh; strict; severe; exact; precise |
| rise (noun) form plural: rises slope; incline; increase; ascent; raise in position or status; promotion; angry response | rise (verb) forms: rose; risen; rising to stand up; to get into an upright position; to climb; to ascend |
| rival (adjective) being in competition; contending | rival (noun) form plural: rivals competitor; opponent; contender |
| rivalry (noun) form plural: rivalries competition; contention; act of competing | robust (adjective) strong; healthy |
| ROI (abbreviation, acronym) return on investment method of measuring the profitability of a company (derived by dividing the net income by total assets) | rotten (adjective) decayed; decomposed; putrid; spoiled; despicable |
| route (noun) form plural: routes track; path; customary series of stops during a trip | route (verb) forms: routed; routed; routing to direct along a particular path; to chart a course |
| routine (adjective) commonplace; ordinary; usual; customary; habitual | routine (noun) form plural: routines commonplace activity; everyday task; habit; custom; practice |
| royalties (noun) form plural: royalties percentage of profits paid to an artist for each copy of his work that is sold | rubber (adjective) composed of elastic material; made from caoutchouc |
| rubber (noun) form plural: rubbers elastic material derived from of some tropical plants; eraser | rule (noun) form plural: rules law; custom; common practice; government; flat tool used for measuring distances |
| rule (verb) forms: ruled; ruled; ruling to govern; to control; to determine; to decide; to decree | run (noun) form plural: runs range; journey; track; path; series; sequence |
| run (verb) forms: ran; ran; running to operate; to activate; to manage; to direct; to carry out; to fulfill | rush (noun) form plural: rushes speed; haste; sudden increase in activity or speed |
| rush (verb) forms: rushed; rushed; rushing to hurry; to make haste; to act or move quickly; to cause to hurry |