Guess Guess synonyms suppose guess and suppose surmise guess and surmise conjecture guess and conjecture supposition guess and supposition think guess and think speculation guess and speculation hypothesis guess and hypothesis estimate guess and estimate imagine guess and imagine reckon guess and reckon Full list of synonyms (1554) Guess antonyms certainty guess and certainty prove guess and prove proof guess and proof fact guess and fact wonder guess and wonder question guess and question disbelieve guess and disbelieve neglect guess and neglect measure guess and measure reject guess and reject Full list of antonyms (43) Share this picture Share this image Share this picture Share this image