1
confirmed
1
connected
1
conscientious(adjective, good, strong, consistent, trustworthy)
1
consecutive
1
continue
1
continued(adjective, strong, firm, determined, steady)
1
convincing(clear, open, honest, sensible, solid)
1
counted on(adjective, certain, unchanging)
1
credible(adjective, open, honest, sensible, solid)
1
dateless
1
decided(adjective, clear, certain, definite, unquestionable)
1
delivering(adjective, certain, unchanging)
1
down home(honest, sensible, realistic, reliable, mature)
1
durable
1
dynamic
1
eager beaver(expression, adjective, strong, firm, determined)
1
effective
1
energetic
1
errorless
1
ethical(open, honest, sensible, solid, reliable)
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APASmart Define. (2016). unfailing thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/unfailing/thesaurus/synonyms
ChicagoSmart Define. 2016. "unfailing thesaurus" https://smartdefine.org/unfailing/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, unfailing thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/unfailing/thesaurus/synonyms>.
MLASmart Define. "unfailing thesaurus" 3 March 2016. Web. 28 September 2026. <https://smartdefine.org/unfailing/thesaurus/synonyms>