rancor, rancorousness.nouns
bitter, long lasting resentment; deep seated ill will
rancorous.adjective
rancorously.adverb
synonym.enmity

rapport.noun
relationship animated by harmony, conformity, accord, or affinity where each cares enough to both understand and respect the other's heart (expressions, personality, hopes, dreams, etc.) in such a way that the joy in a relationship escalates

relevant.adjective
having significant and demonstrable bearing on the matter at hand; affording evidence tending to prove or disprove the matter at issue or under discussion; having social relevance 
relevantly.adverb
relevance, relavancy.nouns
synonyms.germane, pertinent, apposite, applicable, apropos

germane may additionally imply a fitness for or appropriateness to the situation or occasion 
apposite suggests a felicitous.relevance
applicable suggests the fitness of bringing a general rule or principle to bear upon a particular case 
apropos suggests being both relevant and opportune (the quip was apropos) 

redeem, redeemed, redeeming, redeems.transitive verbs
to turn in something and receive something in exchange (turned in the coupons for a credit on products; turned her anger into appreciation by redirecting energy using higher thoughts); to buy back; to set free; to deliver from sin and its penalties
redeemable.adjective

redemption.noun
the act of redeeming or the condition of having been redeemed (salvation from sin through Emmanuel's sacrifice, to save from a state of sinfulness); to recover ownership of by paying a specified sum; recovery of something pawned or mortgaged; to turn in (coupons, for example) and receive something in exchange; to convert into cash (redeem stocks); the payment of an obligation, as a government's payment of the value of its bonds; deliverance upon payment of ransom; rescue; to make up for (the low price of the clothes dryer redeems its lack of special features); to restore the honor, worth, or reputation of (you botched the last job but can redeem yourself on this one)
redemptional or redemptive or redemptory.adjective
serving to redeem

resent, resented, resenting, resents.transitive verbs
to feel indignantly.aggrieved at

resentful.adjective
full of resentment; inclined to resent; caused or marked by resentment 
resentfulness.noun
resentfully.adverb

resentment.noun
a feeling of indignant displeasure or persistent malice at something regarded as a wrong, insult, or injury; ill will towards another for hurt feelings; resentment refers to ill will and smoldering anger generated by a sense of grievance
synonyms-offense, unforgiveness

rigmarole.noun
a complex and or ritualistic procedure 

rupture.verb
inflected form(s).ruptured, rupturing
transitive senses-to part by violence; break; burst 

realm.noun
kingdom; territory; area; scope; sphere; natural, normal, or proper place; social order or rank; domain.(within the realm of possibility) 

repulse.transitive verb
inflected form(s).repulsed, repulsing
to repel by discourtesy, coldness, or denial; to cause repulsion in; to repel, push away from
Physics.-.the mutual action by which bodies, particles, etc. tend to repel each other; opposed to attraction

repulsion.noun
the act of repulsing or the condition of being repulsed; extreme aversion
Physics.-.the tendency of particles or bodies of the same electric charge or magnetic polarity to separate

rote.noun
the use of memory usually with little intelligence; routine or repetition carried out mechanically or unthinkingly

rash1, rasher, rashest.adjectives
marked by or proceeding from undue haste or lack of deliberation or caution; reckless; thoughtless; done without reflection; hasty; precipitate; impetuous; harebrained
rashly.adverb
rashness.noun
rash as a.noun
rash2.noun
a skin eruption; an outbreak of many instances within a brief period (a rash of good luck)

repetition.noun
the act or process or an instance of repeating or being repeated
repetitional.adjective

repetitious.adjective
characterized or marked by repetition; especially; tediously repeating
repetitiousness.noun
repetitiously.adverb

repetitive.adjective
given to or characterized by repetition
repetitively.adverb
repetitiveness.noun

requisite.adjective-and.noun
essential, necessary; required; needful; indispensable
requisiteness.noun
requisitely.adverb
compare-prerequisite

revel.intransitive verb
inflected form(s).reveled or revelled; reveling or revelling
to take intense pleasure or satisfaction; to take part in a revel; carouse; a nocturnal and riotous procession of half drunken and frolicsome persons who after supper parade through the streets with fanfare, torches and music in self-honour, and sing and play before houses of male and female friends; used generally of feasts and drinking parties that are protracted till late at night and indulge in revelry

rational.adjective
based in or derived from reasoning; able to reason; showing reason, not foolish or silly; of sound mind; sane; consistent with or based on reason; logical.(rational behavior)
rationalness.noun
rationally.adverb
rationalism.noun
reliance on reason as the best guide for belief and action
Philosophy.–.the imprisoning (because lots happens that can't be explained by rational reasoning) theory that the exercise of reason, rather than the acceptance of empiricism, authority, or spiritual revelation, provides the only valid basis for action or belief and that reason is the prime source of knowledge and of spiritual truth
rationalist.noun
rationalistic.adjective
rationalistically.adverb

rationality.noun,.plural.rationalities
the quality or condition of being rational; a rational belief or practice

rational number.noun
a number capable of being expressed as an integer or a quotient of integers, excluding zero as a denominator

relinquish, relinquished, relinquishing, relinquishes.transitive verbs
to retire from; give up or abandon; to put aside or desist from something practiced, professed or intended; to let go; surrender; to cease holding physically; release (relinquish a grip)
relinquisher, relinquishment.nouns

rehash, rehashed, rehashing, rehashes.transitive verbs
to bring forth again in another form without significant alteration (rehashing old ideas); to discuss again
rehash.noun
the act or result of rehashing (a rehash of an old plot)

rubber stamp.noun
a person or body that gives perfunctory approval or endorsement of a policy without assessing its merit; a perfunctory approval or endorsement; a piece of rubber affixed to a handle and bearing raised characters used to make ink impressions, as of names or dates

reputation.noun
the general estimation in which a person is held by others (he has a reputation for being honest); a specific characteristic or trait ascribed to a person or thing (a reputation for courtesy)

recalcitrant.adjective
marked by stubborn resistance to and defiance of guidance; unruly
recalcitrant.noun
a recalcitrant person
recalcitrance.or.recalcitrancy.noun

routine.noun
a prescribed, detailed course of action to be followed regularly; a standard procedure; the regular method
Computer Administration.-.a set of programming instructions designed to perform a specific, limited task
routine.adjective
in accord with established procedure (a routine manner of vacuuming the house); habitual; regular (made her routine trip to the store); ordinary.(a routine day)
routinely.adverb
routinism, routinist.nouns