12
permanence
9
prosperous(adjective, characteristic, quality, collapse, failure)
6
paragon
5
excellence
3
strong(adjective, adequate)
3
world class
3
loyalty
2
passing(noun, verb)
2
well(adjective, adverb, adequate)
2
achieve
2
active
2
all-conquering
2
beautiful
2
best-in-class(adjective, feature, characteristic, trait)
2
famous
2
flourishing
2
healthy(adjective, adequate)
2
pass
2
perfection(noun, benefit)
2
qualifying
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APASmart Define. (2015). failing thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/failing/thesaurus/antonyms
ChicagoSmart Define. 2015. "failing thesaurus" https://smartdefine.org/failing/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2015, failing thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/failing/thesaurus/antonyms>.
MLASmart Define. "failing thesaurus" 23 December 2015. Web. 23 September 2026. <https://smartdefine.org/failing/thesaurus/antonyms>