12-Letter Words Starting with R

All 192 twelve-letter words that start with R

RA

• racemization25n. The formation of a racemate from a pure enantiomer.
• racketeering19n. The criminal action of being involved in a racket; especially...
• radiobiology19n. The study of the effects of ionizing radiation on living organisms.
• radiographer19n. Someone who works with radiography. This term seems to be more common...
• radiographic21adj. Of or pertaining to radiography.
• radioisotope15n. A radioactive isotope of an element.
• radiolabeled16adj. Labeled with a radioactive tracer.
• radiological16adj. Of or pertaining to radiation, radioactivity or nuclear weapons.
• radionuclide16n. A radioactive nuclide.
• radiophysics23n. The physics of ionizing radiation.
• radiosurgery17n. The use of a directed beam of X-rays or other ionizing radiation to...
• radiotherapy21n. Synonym of radiation therapy.
• rambunctious18adj. Boisterous, energetic, noisy, and difficult to control.
• ramification19n. A branching-out, the act or result of developing branches; specifically...
• rangefinding18n. The act of determining the distance to a target.
• ratification17n. The act or process of ratifying, or the state of being ratified.
• rationalised13adj. Given a rational explanation.

RE

• reabsorption16n. The subsequent absorption of emitted radiation.
• reachability22n. The condition of being reachable.
• reactivation17n. The activation of something previously inactive or inactivated.
• readaptation15n. A second or subsequent adaptation.
• readjustment22n. A second or subsequent adjustment.
• reallocation14n. The act of reallocating; a second or subsequent allocation.
• reappearance18n. The act of appearing again following absence.
• reassessment14n. The act of reassessing; a second or subsequent assessment.
• reassignment15n. The act of reassigning; a second or subsequent assignment.
• reassortment14n. The act or result of arranging in a new order or layout.
• reassuringly16adv. In a reassuring manner.
• reattachment19n. The act of reattaching; a second or subsequent attachment.
• rebelliously17adv. In a rebellious manner.
• recalcitrant16adj. Marked by a stubborn unwillingness to obey authority.
• recapitalize25v. To change how a corporation is structured.
• recapitulate16v. To summarize or repeat in concise form.
• receivership22n. The office and duties of a receiver.
• receptionist16n. An employee (such as a secretary) who works in reception (receiving...
• recessionary17adj. Of or relating to a recession.
• rechargeable20adj. Able to be recharged, especially of a battery that can be recharged...
• reciprocally21adv. In a reciprocal manner; by way of returning (e.g. a favour, insult...
• recklessness18n. The state or quality of being reckless or heedless, of taking...
• recognisable17adj. Able to be recognised.
• recognisably20adv. In a way or manner that is recognisable.
• recognizable26adj. Able to be recognized.
• recognizably29adv. In a recognizable manner.
• recognizance26n. A form of bail; a promise made by the accused to the court that they...
• recollection16n. The act of recollecting, or recalling to the memory; the act of...
• recommission18v. To give a new commission or to validate an existing commission.
• recommitment20n. A renewal of a commitment, or an act of recommitting.
• reconcilable18adj. Capable of being reconciled.
• reconnection16n. A connection of things that have been previously severed.
• reconstitute14v. To construct something anew, or in a different manner.
• reconversion17n. The action of converting something again.
• reconviction19n. Conviction again or anew.
• recreational14adj. For, or relating to, recreation.
• recuperation16n. Gradual restoration to health.
• recuperative19adj. In the way of recuperation.
• redecoration15n. The act of redecorating.
• rededication16n. A new dedication.
• redefinition16n. The act or event of redefining.
• redeployment20n. The act of redeploying.
• redistribute15v. To distribute again.
• reducibility20n. The property of being reducible.
• reductionism17n. An approach to studying complex systems or ideas by reducing them to a...
• reductionist15adj. Of, or relating to reductionism.
• reemployment21n. The condition of being reemployed.
• reengagement16n. A renewed or repeated engagement.
• reenlistment14n. The condition of being reenlisted.
• reevaluation15n. A second or subsequent evaluation or rating.
• refashioning19n. A reinvention; an act of fashioning again.
• reflectively23adv. In a reflective manner; meditatively.
• reflectivity23n. The property or quality of being reflective.
• reformatting18n. The act by which something is reformatted.
• refoundation16n. The process of founding something anew.
• refreshingly22adv. In a refreshing manner.
• refrigerator16n. A household or commercial appliance used for keeping food fresh using...
• refurbishing21n. The act by which something is refurbished.
• regeneration13n. Rebuilding or restructuring; large scale repair or renewal...
• regenerative16adj. That serves to regenerate.
• regionalized23adj. Divided into regions or considered on a regional basis.
• registration13n. The act of signing up or registering for something.
• regressively19adv. In a regressive manner.
• regurgitator14n. A person or thing that regurgitates.
• rehabilitate17v. To restore (someone) to their former state, reputation, possessions...
• reimbursable18adj. Eligible for repayment, particularly for money spent or expenses...
• reimposition16n. The act of reimposing; the act of imposing something again.
• reincarnated15adj. Having undergone reincarnation.
• reinitialize21v. To initialize again.
• reinspection16n. A repeat inspection, especially one carried out after a previous...
• reintroduced16adj. Of a plant or animal, introduced again.
• reinvestment17n. The condition of being reinvested.
• reinvigorate16v. To give new life, energy or strength to someone or something; to...
• reionization21n. The act or process of reionizing.
• rejectionist21adj. Having a tendency to reject the plans or proposals of others.
• rejuvenating23adj. Having a quality which rejuvenates.
• rejuvenation22n. The process of rendering young again.
• relatability17n. The quality of being relatable.
• relationally15adv. In a relational way.
• relationship17n. A connection or association; the condition of being related.
• relativistic17adj. Of or relating to relativity.
• relentlessly15adv. In a manner unrelenting or unyielding in severity; unrelentingly.
• rememberable20adj. Capable or worthy of being remembered.
• remembrancer20n. A person who reminds someone.
• remifentanil17n. A potent ultra short-acting synthetic opioid (trademark Ultiva) given...
• reminiscence18n. An act of remembering long-past experiences, especially positive or...
• remonstrance16n. A remonstration; disapproval; a formal, usually written, objection or...
• remorsefully20adv. With remorse; in a remorseful manner.
• remortgaging17n. The act by which something is remortgaged.
• removability22n. The state of being removable.
• remuneration14n. Something given in exchange for goods or services rendered.
• remunerative17adj. Offering compensation, usually financial; rewarding; lucrative.
• renewability20n. The property of being renewable.
• renomination14n. The act of renominating, of nominating again.
• renouncement16n. The act of renouncing.
• renovascular17adj. Of or pertaining to the blood vessels of the kidney.
• renumeration14n. The act or process of renumerating (counting or numbering again).
• renunciation14n. The act of rejecting or renouncing something as invalid.
• reoccupation18n. The condition of being reoccupied.
• reoccurrence18n. An instance of something taking place again.
• repatriation14n. The process of returning of a person to their country of origin or...
• repercussion16n. A consequence or ensuing result of some action.
• repetitively20adv. In a repetitive manner.
• replantation14n. Replanting (of plants, fields, or landscaping).
• replastering15n. A second or subsequent plastering; a new application of plaster to a...
• replenishing18n. Replenishment.
• repopulation16n. The act of repopulating, especially with a species that might otherwise...
• repossession14n. The condition of being repossessed.
• representing15n. An act of representation.
• reprimanding18n. The act of giving a reprimand.
• reprioritize23v. To arrange things in a new order of importance; to prioritize again.
• reprocessing17n. A second or subsequent processing.
• reproducible19adj. Capable of being reproduced at a different time or place and by...
• reproducibly22adv. In a reproducible manner; in a manner that can be copied.
• reproduction17n. The act of reproducing new individuals biologically.
• reproductive20adj. Of or relating to reproduction.
• reprogrammed20adj. That has been subject to reprogramming.
• reprographic22adj. Of, relating to, or produced by reprography.
• reputability19n. The property of being reputable, a person's reputation.
• reputational14adj. Of or pertaining to reputation.
• rescheduling19n. A change of schedule.
• researchable19adj. That can be researched.
• resentencing15n. A second sentencing.
• resequencing24n. Arrangement in a new sequence; reordering.
• resettlement14n. The transportation of a group of people to a new settlement.
• residentiary16adj. Of, pertaining to, or having residence, especially official residence.
• resoluteness12n. The state or characteristic of being resolute; determination or...
• resoundingly17adv. With a loud, resonant sound.
• respectfully22adv. In a respectful manner.
• respectively22adv. In a relative manner; often used when comparing array lists, where the...
• resplendence17n. The property of being, or that which causes something to be...
• responsively20adv. In a responsive manner.
• responsivity20n. A measure of responsiveness.
• responsorial14n. A book of liturgical responses.
• ressentiment14n. A sense of resentment arising from deep-seated feelings of envy or...
• restaurateur12n. The owner of a restaurant.
• restlessness12n. The state or condition of being restless; an inability to be still...
• resubmission16n. The act or process of resubmitting; a second or subsequent submission.
• resurrection14n. The act of arising from the dead and becoming alive again.
• resuscitator14n. A person or thing that resuscitates.
• resuspension14n. A second or subsequent suspension.
• reticulation14n. A network of criss-crossing lines, strands, cables or pipes.
• reticulocyte19n. An immature red blood cell, having a reticular network of RNA.
• retrenchment19n. A curtailment or reduction.
• retrocession14n. The transfer of risk from one reinsurer to another.
• retrofitting16n. The process by which something is retrofitted.
• retrogradely17adv. With a backward motion.
• retroversion15n. A turning or falling back.
• reupholstery20n. The act of reupholstering furniture.
• revalidation16n. The act of revalidating.
• revegetation16n. The act or process of revegetating.
• reversionary18n. A reversioner.
• revisitation15n. An act of revisiting.

RH

• rhapsodizing28n. The act of one who rhapsodizes; lyrical expression.
• rhetorically20adv. In a rhetorical manner.
• rheumatology21n. The branch of medicine specializing in arthritis and other ailments of...
• rhododendron18n. Any of various flowering shrubs in the genus Rhododendron.
• rhombohedral23adj. Having three equal axes and oblique angles.
• rhythmically28adv. In a rhythmical manner.

RI

• ribonuclease16n. Any of a group of enzymes that catalyze the hydrolysis of ribonucleic...
• ribosylation17n. The attachment of a ribose or ribosyl group to a molecule, especially...
• ridiculously18adv. In a ridiculous manner. In a way that is funny, embarrassing or...
• rightfulness19n. The state or quality of being rightful.
• rightsholder20n. A person or organization that owns the legal rights to something.
• rigorousness13n. The property of being rigorous, strictness.
• rivastigmine18n. A drug C₁₄H₂₂N₂O₂ that increases acetylcholine levels by inhibiting the...

RO

• roadbuilding17n. The construction of roads.
• rockumentary23n. A documentary about rock music or its musicians.
• romantically19adv. In a romantic way.
• romanticized26adj. Interpreted in an unrealistic, idealized fashion.
• rootlessness12n. The property of being rootless.
• rosuvastatin15n. A statin (trademark Crestor) that is administered orally in the form of...
• rotationally15adv. In a rotational manner.

RU

• rustproofing18n. The process of making something rustproof.
• ruthlessness15n. The property of being ruthless.

Questions about these words

How many twelve-letter words that start with R are there?

Word.ws lists 192 twelve-letter words that start with R, plus 1,172 rare ones.

What are common twelve-letter words that start with R?

relationship, respectively, representing, registration, recreational, reproductive, reproduction and resurrection.

Which of the twelve-letter words that start with R has the highest letter score?

recognizably scores 29 points with the standard letter tile values.

Related word lists

• 12-Letter Words
• Words That Start with R
• 11-Letter Words Starting with R
• 13-Letter Words Starting with R
• Q Words Without U