iffy Antonyms

solid-state undoubtable uncontestable unappealable true-hearted sure specific self-confident predicative positive undoubted undubitable concretize word-perfect unambiguous unhesitating unquestionable unmistakable unimpeachable unevitable unequivocal pistic irrefutable doubtless discriminative demonstrable definite decisive convincing conclusive cocksure certain emphatic explicit irrebuttable interrupter insurer infallible indubitable indubious indisputable incontestable incisor apodictic