7
benevolent
7
teammate
7
unkillable
4
charitable
4
constant(adjective, stable)
4
lasting(adjective, stable)
4
strong(adjective, stable)
3
acceptable(adjective, stable)
3
admissible(adjective, stable)
3
allowable(adjective, stable)
3
applicable(adjective, stable)
3
arguable(adjective, stable)
3
attestable(adjective, stable)
3
bearable(adjective, stable)
3
biodegradable(adjective, stable)
3
biohazard(adjective, stable)
3
capable of continuing(adjective, stable)
3
carbon-neutral(adjective, stable)
3
checkable(adjective, stable)
3
clean(adjective, stable)
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APASmart Define. (2016). unfailing thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/unfailing/thesaurus/related
ChicagoSmart Define. 2016. "unfailing thesaurus" https://smartdefine.org/unfailing/thesaurus/related (accessed September 29, 2026).
HarvardSmart Define 2016, unfailing thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/unfailing/thesaurus/related>.
MLASmart Define. "unfailing thesaurus" 3 March 2016. Web. 29 September 2026. <https://smartdefine.org/unfailing/thesaurus/related>