Synonyms and related words :
a bit thick, a bit thin, absurd, account as, accused, arguable, assume, at issue, awake a doubt, be afraid, be diffident, be doubtful, be dubious, be possessive, be skeptical, be uncertain, believe, beyond belief, call in question, challenge, conceive, conclude, confutable, conjectural, consider, contest, contestable, contested, controversial, controvertible, correspondent, daresay, debatable, deduce, deem, defendant, deniable, disbelieve, disbelieved, discredited, disputable, dispute, disputed, distrust, divine, doubt, doubtable, doubted, doubtful, dream, dubious, dubitable, esteem, estimate, expect, exploded, fancy, feel, gather, grant, greet with skepticism, guess, half believe, harbor suspicions, hard of belief, hard to believe, have a feeling, have a hunch, have an idea, have an impression, have an inkling, have reservations, have the idea, hold, hold as, iffy, imagine, implausible, in dispute, in doubt, in dubio, in question, inconceivable, incredible, infer, judge, let, let be, libelee, look upon as, maintain, misdoubt, misgive, mistakable, mistrust, mistrusted, moot, not deserving belief, open, open to doubt, open to question, open to suspicion, opine, passing belief, prefigure, preposterous, presume, presuppose, presurmise, prisoner, problematic, provisionally accept, query, question, questionable, questioned, raise a question, reckon, refutable, regard, repute, respondent, ridiculous, say, scruple, sense, set down as, shadowy, shady, shaky, smell a rat, speculative, staggering belief, suppose, suppositional, surmise, suspected, suspicion, suspicious, take, take for, take for granted, take it, take to be, tall, theorize, thick, thin, think, throw doubt upon, treat with reserve, trow, unbelievable, uncertain, unclear, unconvincing, under a cloud, under suspicion, understand, unearthly, ungodly, unimaginable, unthinkable, unworthy of belief, view as, ween