questionable
WordReference English Thesaurus © 2026
Sense: Justifying doubt
Synonyms:
doubtful Collocations, dubious Collocations, uncertain Collocations, undefined Collocations, equivocal, arguable, obscure Collocations, controversial Collocations, vague Collocations, unsettled, open to doubt, indeterminate, debatable, moot Collocations, problematic, apocryphal, mysterious Collocations, ambiguous, open to question, hard to believe, incredible Collocations, iffy
Antonyms:
defined, certain Collocations, undoubted, settled Collocations, beyond doubt, unquestionable, clear Collocations, evident Collocations, accredited, categorical, clean-cut, confirmed Collocations, explicit Collocations, foregone, irrefutable, outright Collocations, undeniable
Sense: Having a poor appearance or reputation
Synonyms:
dubious Collocations, suspicious Collocations, suspect Collocations, disreputable, irregular, unsatisfactory, ill-favored, disagreeable, evil-looking, disrespectable, untrustworthy, dishonest Collocations, shady Collocations, fishy, queer Collocations
Antonyms:
honored, esteemed, reputable, respectable, trustworthy Collocations, honest Collocations, aboveboard, well-presented, meticulous, well turned-out