T
Theory x practice
Tragedy x comedy
Tolerance x intolerance, bigotry
Time x timelessness, eternity
Top x bottom
Truth x falsehood
Thrive x decline
Teach x learn
Triumph x defeat
Take x give
Tie x untie
Thick x thin
Tame x wild
Tender x hard
Thrifty x extravagant
Tragic x comic
Transient x lasting, durable
Tainted x pure
Tenacious x butter-fingered
Transparent x opaque
Tedious x lively
Temperate x intemperate
Thin x stout
Tranquil x agitated, noisy
Tractable x refractory
Temporal x spiritual
U
Union x disunion, division
Utility x futility
Use x disuse, abuse, misuse
Unite x disunite
Urban x rural
Ugly x beautiful
Usual x unusual
Uniform x varied, diverse, variable
V
Virtue x vice
Victor x vanquished
Victory x defeat
Volunteer x conscript
Volunteer x desert, conscribe
Violent x gentle, non-violent
Voluntary x compulsory
Vivacious x languid, idle
Vain x modest
Vindictive x forgiving
Vulgar x refined
Venturesome x timid
Vigilant x careless
Vigorous x feeble
Vital x immaterial
W