SYN: Doubtful, dubious, problematical, disputable, debatable, uncertain, suspicious.
ANT: Certain, evident, self-evident, obvious, indisputable.
=
KEY: Quibble \v.\
SYN: Shuffle, evade, trifle, cavil, equivocate, prevaricate.
ANT: Reason, argue, enunciate, investigate, discuss.
=
KEY: Quick.
SYN: Fast, rapid, speedy, expeditious, swift, hasty, prompt, ready, clever, sharp, shrewd, adroit, keen, fleet, active, brisk, nimble, lively, agile, alert, sprightly, transient, intelligent, irascible.
ANT: Slow, tardy, sluggish, inert, inactive, dull, insensitive.