rabid :: like a fanatic; furious

rampant :: rearing up on hind legs; unrestrained

rancid :: having the odor of stale fat

rapacious :: excessively grasping; plundering

rarefied :: made less dense of a gas

raucous :: harsh and shrill

ravening :: rapacious; seeking prey

ravenous :: extremely hungry

recalcitrant :: obstinately stubborn

reciprocal :: mutual; exchangeable; interacting

recondite :: abstruse; profound; secret

recumbent :: reclining; lying down completely or in part

recurrent :: occurring again and again

redolent :: fragrant; odorous; suggestive of an odor

redoubtable :: formidable; causing fear

redundant :: superfluous; excessively wordy; repetitious

refractory :: stubborn; unmanageable

refulgent :: radiant

regal :: royal

remediable :: reparable

remedial :: curative; corrective

remiss :: negligent

remunerative :: compensating; rewarding

reparable :: capable of being repaired

repellent :: driving away; unattractive

replete :: filled to capacity; abundantly supplied

reprehensible :: deserving blame

resonant :: echoing; resounding; possessing resonance

resplendent :: brilliant; lustrous

restive :: unmanageable; fretting under control

retentive :: holding; having a good memory

retroactive :: of a law which dates back to a period before its enactment

retrograde :: going backwards; degenerating

rheumy :: pertaining to a discharge from nose and eyes

ribald :: wanton; profane

rife :: abundant; current

risible :: inclined to laugh; ludicrous

risqu?:: verging upon the improper; off-color

roan :: brown mixed with gray or white

robust :: vigorous; strong

rococo :: ornate; highly decorated

roseate :: rosy; optimistic

rubicund :: having a healthy reddish color; ruddy; florid

ruddy :: reddish; healthy-looking

rudimentary :: not developed; elementary

rueful :: regretful; sorrowful; dejected

ruthless :: pitiless

tacit :: understood; not put into words

taciturn :: habitually silent; talking little

tactile :: pertaining to the organs or sense of touch

tainted :: contaminated; corrupt

tautological :: needlessly repetitious

tawdry :: cheap and gaudy

temporal :: not lasting forever; limited by time; secular

tenacious :: holding fast

tentative :: provisional; experimental

tenuous :: thin; rare; slim

tepid :: lukewarm

terrestrial :: on the earth

terse :: concise; abrupt; pithy

tertiary :: third

testy :: irritable; short-tempered

therapeutic :: curative

thermal :: pertaining to heat

titanic :: gigantic

titular :: nominal holding of title without obligations