238 entries under adjective topic. ×
| unaccountable(madcap, feckless, irresponsive) | |
| undecided(uncertain, nervous, doubtful, insecure) | |
| weak(light, slight, thin, uncertain) | |
| accident-sensitive(unreliable, insecure, treacherous, incalculable) | |
| acting | |
| ad interim | |
| alternate | |
| ambivalent | |
| arbitrary | |
| awhile | |
| betwixt and between(expression, idiom, uncertain, nervous) | |
| borderline(uncertain, nervous, doubtful, shaky) | |
| bout | |
| briefly | |
| brisk | |
| burst | |
| conniving(false, dishonest, deceitful, dubious) | |
| convertible | |
| crooked(bad, wrong, false, dishonest) | |
| dalliance |
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| APA | Smart Define. (2016). fly-by-night thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/fly-by-night/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "fly-by-night thesaurus" https://smartdefine.org/fly-by-night/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, fly-by-night thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/fly-by-night/thesaurus/synonyms>. |
| MLA | Smart Define. "fly-by-night thesaurus" 26 February 2016. Web. 29 September 2026. <https://smartdefine.org/fly-by-night/thesaurus/synonyms> |