ancillary
SYN: auxiliary, subsidiary, accessory
ANT: central, key, primary, principal, main
bowdlerize
SYN: censor, purge, expurgate
condescend
SYN: deign
cozen
SYN: dupe, deceive, beguile, inveigle
enclave
SYN: island, subgroup
forte
SYN: gift, aptitude, specialty
ANT: weakness, shortcoming, foible
gratis
SYN: (adj) on the house, (adv) freely
ANT: (adv) for a price
icon
SYN: emblem, idol
interstice
SYN: gap, slot, crevice, interval, lacuna
macrocosm
SYN: cosmos, entirety, universe
ANT: model, miniature, microcosm
mountebank
SYN: impostor, quack, trickster, swindler, charlatan
ANT: sucker, dupe, "mark", "pigeon
paean
SYN: hymn, ode, anthem
ANT: dirge, elegy, lament, threnody
persiflage
SYN: banter, jesting, repartee, badinage
plethora
SYN: surplus, surfeit, glut, excess
ANT: shortage, paucity, dearth, scarcity
pragmatic
SYN: down-to-earth, businesslike
ANT: idealistic, impractical, visionary
quizzical
SYN: peculiar, perplexed, mystified, derisive
ANT: unequivocal, crystal-clear, unambiguous
rapacity
SYN: avarice, cupidity, voraciousness
ANT: liberality, generosity, altruism
schism
SYN: rift, breach, split
ANT: united front, reconciliation
therapeutic
SYN: curative, salutary, salubrious
ANT: harmful, injurious, deleterious
virtuoso
SYN: expert, master, prodigy, maestro
ANT: amateur, beginner, novice, (adj) mediocre