syn: baseless, unsupported
ant: well-founded reasonable, justified
groundless
syn: waterless, parched, boring, unimaginative
ant: waterlogged, soggy, fertile, lush
arid
syn: copycat, impersonator; parrot, impersonate
mimic
syn: spur on, encourage, prompt, goad
ant: discourage, dissuade, disincline
motivate
syn: word of honor; pledge
syn: assaulter, mugger
ant: victim, prey
assailant
syn: pressure, confine, limit
ant: loosen, liberate, relax
constrain
syn: disturb; frill
ant: smooth out; soothe
ruffle
syn: relish, revel in, crow over
ant: regret, bemoan, mourn, feel chagrined
gloat
syn: ground, topography, territory
terrain
syn: impartial, unbiased, apathetic
ant: partial, biased, prejudiced
disinterested
syn: work, maneuver, exploit, influence
manipulate
syn: composed, fair, august
ant: agitated, troubled, inclement
serene
syn: provoke, incense, madden
ant: calm, soothe, pacify, please
infuriate
syn: dissimilarity
ant: similarity, sameness, uniformity
diversity
syn: present-day, modern, current; peer
ant: ancient, prehistoric, antique, antiquated
contemporary
syn: highest; utmost
ant: least, minimum; lowest, smallest
maximum
syn: shamefaced, meek
ant: bold, saucy, brazen
sheepish
syn: career, pursuit
ant: hobby, pastime, avocation
syn: bombardment, shelling, volley, blast
barrage
syn: baffling, confusing, bewildering
ant: understandable, plain, intelligable
incomprehensible
syn: breaker; surge, balloon, bulge
ant: trough; deflate, collapse
billow
without any good reason or cause, unjustified
groundless
syn: riddle, mystery, puzzle, conundrum
enigma
syn: entrap, ensnare
waylay