Synonyms|341Antonyms|65|Broader|5Narrower|0Related|216
1
perdurable(absolute, endless, immense, permanent, unlimited)
1
perennial(permanent, long-term, lifelong)
1
permanent(long-term, lifelong)
1
persevering(adjective, strong, firm, energetic, determined)
1
persistent(adjective, strong, firm, certain, determined)
1
persisting(permanent, long-term, lifelong)
1
pertinacious(adjective, strong, firm, energetic, determined)
1
plenitudinous
1
plenty
1
plodding(adjective, strong, firm, determined, steady)
1
plugging(adjective, strong, firm, determined, steady)
1
prevailing
1
prevalent
1
prodigal
1
productive
1
profusive
1
rampant
1
renewable
1
resolute(adjective, strong, firm, energetic, determined)
1
rich
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ChicagoSmart Define. 2015. "inexhaustible thesaurus" https://smartdefine.org/inexhaustible/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, inexhaustible thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/inexhaustible/thesaurus/synonyms>.
MLASmart Define. "inexhaustible thesaurus" 13 April 2015. Web. 1 October 2026. <https://smartdefine.org/inexhaustible/thesaurus/synonyms>