2
rootless(adjective, moving, uncertain, nervous, idle)
2
scatterbrained(adjective, careless, immoral, thoughtless, reckless)
2
shaky(adjective, unreliable, insecure, treacherous, incalculable)
2
slimy(adjective, informal, unreliable, shady)
2
suspect(uncertain, doubtful, unsure)
2
unaccountable(adjective, madcap, feckless, irresponsive)
2
undecided(adjective, uncertain, nervous, doubtful, insecure)
2
weak(adjective, light, slight, thin, uncertain)
1
accident-sensitive(adjective, unreliable, insecure, treacherous, incalculable)
1
acting
1
ad interim
1
alternate
1
ambivalent(adjective, irresolute)
1
arbitrary(adjective, capricious)
1
arguable(uncertain, doubtful, unsure)
1
awhile
1
betwixt and between(expression, adjective, idiom, uncertain, nervous)
1
bolter(exile, outlaw, outcast)
1
borderline(adjective, uncertain, nervous, doubtful, shaky)
1
bout
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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>