Questionable synonyms such as doubtful, apocryphal, dark, and disreputable. Questionable is an adjective, and its antonyms are certain and indisputable. Additionally, here are 57 synonyms and nearby words for questionable as well as words beginning with Q, Qu, Que, Ques, and Quest.
57 synonyms for questionable
1. controversial
apocryphal
arguable
borderline
contentious
debatable
dodgy
doubtful
dubious
equivocal
iffy
implausible
improbable
in dispute
in question
marginal
moot
not definite
not obvious
open to doubt
open to question
problematical
spurious
uncertain
unconvincing
undecided
unprovable
unresolved
unsettled
unverified
2. suspicious
disreputable
dodgy
doubtful
dubious
fishy
funny
iffy
irregular
murky
not quite right
potentially dishonest
potentially illegal
shady
shifty
suspect
under suspicion
unsavoury