sure Antonyms

unsure waverer uncaused treacherous transcendental transcendent theoretical theoretic tester tentative torn swerving uncertain unchancy wavering vicissitudinous vicissitudinary vague untrue unsound unreliable unfounded unfirm unearthly suspicious suspect reluctant rebuttable rattletrap quixotic quicksilver questionable putative problematical problematic probationary remote riskful risky suppositive supposititious suppositional supposed stochastic spurious speculative slippery shaky self-conscious presumptive