5
fallible(adjective, unreliable, insecure, treacherous, incalculable)
3
errant
3
erring
2
fickle(adjective, unreliable, insecure, treacherous, incalculable)
2
nondurable(adjective, unreliable, insecure, treacherous, incalculable)
2
unsteady(adjective, unreliable, insecure, treacherous, incalculable)
2
untrustworthy(adjective, unreliable, insecure, treacherous, incalculable)
1
accident-sensitive(adjective, unreliable, insecure, treacherous, incalculable)
1
dickey(adjective, unreliable, insecure, treacherous, incalculable)
1
dubious(adjective, unreliable, insecure, treacherous, incalculable)
1
fair-weather(adjective, unreliable, insecure, treacherous, incalculable)
1
fairweather(adjective, unreliable, insecure, treacherous, incalculable)
1
faithless(adjective, unreliable, insecure, treacherous, incalculable)
1
fast and loose(adjective, unreliable, insecure, treacherous, incalculable)
1
fault-prone
1
fly-by-night(adjective, unreliable, insecure, treacherous, incalculable)
1
fly by night(adjective, unreliable, insecure, treacherous, incalculable)
1
hopeless(adjective, unreliable, insecure, treacherous, incalculable)
1
iffy(adjective, unreliable, insecure, treacherous, incalculable)
1
incalculable(adjective, unreliable, insecure, treacherous)
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APASmart Define. (2016). error-prone thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/error-prone/thesaurus/synonyms
ChicagoSmart Define. 2016. "error-prone thesaurus" https://smartdefine.org/error-prone/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, error-prone thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/error-prone/thesaurus/synonyms>.
MLASmart Define. "error-prone thesaurus" 3 March 2016. Web. 20 September 2026. <https://smartdefine.org/error-prone/thesaurus/synonyms>