certain Antonyms

uncertain ambiguous indecisive tentative undecided questionable imprecise doubtful iffy unclear unpredictable unsure dubious unsettled indeterminate indefinite contingent debatable stochastic timorous uncaused temperamental sub judice threatening substract theoretical suspect supposed suspicious sweeping torn susceptible suppositive suppositional tester vacillating theoretic touchy transcendent unfounded unlikely unmeaning unpractical unreasoned unreliable unsound unstable unstrained untitled untrue