59 entries under unpredictable topic. ×

3
vacillating(adjective, uncertain, nervous, doubtful, dubious)
2
fallible(adjective, unreliable, fickle, variable)
2
inconsistent(adjective, loose, unreliable, variable)
2
makeshift(adjective, fickle, variable, spontaneous)
2
weak(adjective, light, slight, thin, uncertain)
1
deceitful(adjective, false, dishonest, dubious)
1
false(adjective, light, weak, slight, thin)
1
furtive(adjective, dishonest, deceitful, dubious)
1
inaccurate(adjective, careless, loose, sloppy)
1
indeterminate(adjective, loose, uncertain, nervous, doubtful)
1
tricky(adjective, false, loose, dishonest, deceitful)
1
underhand(adjective, bad, wrong, false, dishonest)
1
unsound(adjective, light, weak, slight, thin)
1
untrue(adjective, false, dishonest, deceitful)
1
wavering(adjective, uncertain, nervous, doubtful, hesitant)
0
bum(loose, unreliable, variable, irresponsible)
0
deceptive(adjective, false, fickle, variable)
0
delusive(adjective, fickle, variable, undependable)
0
erroneous(adjective, fickle, variable, undependable)
0
fake(adjective, bad, wrong, immoral)
10 years ago|3.8k views|share |citing 
APASmart Define. (2016). fly-by-night thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/fly-by-night/thesaurus/synonyms
ChicagoSmart Define. 2016. "fly-by-night thesaurus" https://smartdefine.org/fly-by-night/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, fly-by-night thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/fly-by-night/thesaurus/synonyms>.
MLASmart Define. "fly-by-night thesaurus" 26 February 2016. Web. 28 September 2026. <https://smartdefine.org/fly-by-night/thesaurus/synonyms>