Synonyms|172Antonyms|16|Broader|1Narrower|0Related|28
1
inexpungible(permanent, long-term, lifelong)
1
interminable
1
intransient
1
invariable(calm, strong, solid, steady, substantial)
1
inveterate
1
lifelong(permanent, recurrent, perpetual, long-term, returning)
1
longeval
1
longevous
1
longstanding(fundamental, permanent, continuing, operating, recurrent)
1
macrobiotic
1
nailed(calm, strong, solid, steady, substantial)
1
never-ceasing
1
never-ending
1
non-stop
1
nonstop
1
nonterminating
1
nonterminous
1
of long duration(expression, idiom)
1
of long standing(expression, idiom)
1
olamic
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APASmart Define. (2016). perdurable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/perdurable/thesaurus/synonyms
ChicagoSmart Define. 2016. "perdurable thesaurus" https://smartdefine.org/perdurable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, perdurable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/perdurable/thesaurus/synonyms>.
MLASmart Define. "perdurable thesaurus" 3 March 2016. Web. 22 September 2026. <https://smartdefine.org/perdurable/thesaurus/synonyms>