Synonyms|417Antonyms|83|Broader|2Narrower|0Related|191
1
hang tough(expression, strong, certain, definite, resolved)
1
hard-and-fast(adjective, strict)
1
hard-core
1
hardened(adjective, determined, fixed, stubborn)
1
homogeneous(adjective, dull, steady, stable, regular)
1
hopeless
1
imminent(expected, predictable, necessary, inexorable, undeniable)
1
impending(expected, predictable, necessary, inexorable, undeniable)
1
implacable
1
impliable
1
in the bag(expression, idiom, obvious, necessary, inexorable)
1
incontrovertible
1
indefeasible
1
indissoluble(necessary, required, obligatory, conclusive)
1
inductile
1
ineludible(expected, predictable, necessary, inexorable, undeniable)
1
inert
1
inextensible
1
inextensile
1
inextensional
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APASmart Define. (2015). unalterable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/unalterable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unalterable thesaurus" https://smartdefine.org/unalterable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, unalterable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/unalterable/thesaurus/synonyms>.
MLASmart Define. "unalterable thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/unalterable/thesaurus/synonyms>