An extensive working vocabulary is a prerequisite for test-taking success on the GRE Graduate Record Exam.

GRE word list

supersede	to relace, especially to displace as inferior
supine	lying in the back
supplant	to replace, substitute
suppliant	beseeching
supplicant	one who asks humbly and earnestly
supposition	the act of assuming to be true or real
syllogism	a minor premise, and a conclusion
sylvan	related to the woods or forest
tacit	silently understood, implied
talisman	charm to bring good luck and avert misfortune
tangential	peripheral, irrelevant, digressing
tautology	unnecessary repetition
taxonomy	science of classification
tenet	belief, doctrine
tenuous	weak, insubstantial
terrestrial	earthly, commonplace
theocracy	government by priests representing a god
thespian	an actor or actress
timbre	voice tone color
tirade	long, violent speech, verbal assault
toady	flatterer, yes-man
tome	book, usually large and academic
torpor	lethargy, dormancy, sluggishness
torque	a turning or twisting force
tortuous	having many twists and turns
tout	to promote or praise energetically
Tractable	obedient, yielding
Transgression	act of trespassing or violating a law or rule
Transient	temporary, fleeting
Translucent	partially transparent
Travail	work, especially arduous work
Travesty	parody, exaggerated imitation, caricature
Treatise	article treating a subject systematically and thoroughly
Tremulous	trembling, frugal, timid
Trepidation	fear and anxiety
Truculence	aggressiveness, ferocity
Tryst	agreement between lovest to meet, rendezvous
Tumid	swollen, distended
Turbid	muddy, opaque, in a state of great confusion
Turgid	swollen, pompous
Tutelary	serving as a guardian or protector
Uncanny	myterious, strange
Undulating	moving in waves
Unfeigned	not false, genuine
Untenable	indefensible
Untoward	not favorable, troublesome, unruly
Usury	a practice of lending money at exorbitant rates
Vacillate	to waver, oscillate
Vacuous	empty, void, lacking intelligence
Valedictory	pertaining to a farewell
Vapid	tasteless, dull
Variegated	varied, marked with different colors
Vaunt	to boast, drag
Venal	mercenary, corruptible
Vendetta	prolonged feud marked by bitter hostility
Venerate	to adore, honor, respect
Veracious	truthful, accurate
Verbose	wordy
Vertigo	dizziness
Vexation	irritation, annoyance
Viable	practicable, capable of developing
Vindictive	vengeful, unforgiving
Virtuoso	someone with master skills , expert musician
Visage	appearance, aspect
Viscous	thick, syrupy
Vitiate	to impair the quality of, corrupt morally
Vituperative	using or containing harsh, abusive censure
Vivisection	dissection, surgery
Vogue	prevailing fashion or practice
Volatile	tending to vary frequently, fickle
Vortex	whirpool, center of turbulence
Warranted	justified
Wary	careful, cautious
Welter	wallow or roll, toss about, be in turmoil
Wistful	vaguely longing, sadly thoughtful
whimsical	fanciful, unpredictable
Zealot	one who is fanatically devoted to a cause