97 entries under unpredictable topic. ×

48
questionable(noun, adjective, clear, great, rough)
38
uncertain(noun, adjective, clear, open, rough)
26
unreliable(adjective, delicate, uncertain, true, nervous)
21
unsure(adjective, clear, open, rough, delicate)
20
untrustworthy(adjective, uncertain, nervous, dishonest, doubtful)
16
indefinite(adjective, open, obscure, rough, uncertain)
14
undependable(adjective, uncertain, nervous, dishonest, doubtful)
13
iffy(adjective, clear, open, delicate, informal)
10
implausible(adjective, great, slight, extraordinary, amazing)
10
disreputable(adjective, uncertain, doubtful, unsettled)
10
fly-by-night(adjective, uncertain, nervous, dishonest, doubtful)
9
indeterminate(adjective, clear, obscure, rough, certain)
9
shifty(adjective, weak, corrupt, uncertain, dishonest)
9
unstable(adjective, delicate, uncertain, nervous, dishonest)
7
trustless(adjective, uncertain, dishonest, doubtful, deceitful)
7
wavering(adjective, open, uncertain, nervous, dishonest)
6
fickle(adjective, dishonest, deceitful, unreliable)
6
treacherous(adjective, corrupt, dishonest, deceitful)
5
devious(adjective, false, unusual, uncertain, dishonest)
5
tricky(adjective, weak, delicate, loose, uncertain)
10 years ago|38k views|share |citing 
APASmart Define. (2016). dubious thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/dubious/thesaurus/synonyms
ChicagoSmart Define. 2016. "dubious thesaurus" https://smartdefine.org/dubious/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, dubious thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/dubious/thesaurus/synonyms>.
MLASmart Define. "dubious thesaurus" 4 March 2016. Web. 22 September 2026. <https://smartdefine.org/dubious/thesaurus/synonyms>