Synonyms|568Antonyms|143|Broader|13Narrower|18Related|982
2
indissoluble
2
infinite(adjective, stable, fixed, constant)
2
lingering
2
long-term
2
ongoing
2
sturdy
2
sustained
2
timeless
2
unchanging(adjective, constant, flexible, permanent)
2
unkillable
1
deep-rooted(adjective, fixed, held)
1
definitive(adjective, false, uncertain, authoritative)
1
hard put
1
hard to please
1
hard up
1
hardened
1
hardy
1
immovable
1
immutable
1
incorruptible
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ChicagoSmart Define. 2016. "temporary thesaurus" https://smartdefine.org/temporary/thesaurus/antonyms (accessed September 21, 2026).
HarvardSmart Define 2016, temporary thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/temporary/thesaurus/antonyms>.
MLASmart Define. "temporary thesaurus" 29 March 2016. Web. 21 September 2026. <https://smartdefine.org/temporary/thesaurus/antonyms>