Synonyms|384Antonyms|70|Broader|9Narrower|5Related|387

43 entries under permanent topic. ×

5
immutable(adjective, stable, constant, stability, enduring)
4
continued(continuous, lasting, everlasting, uninterrupted)
4
indestructible(adjective, stable, constant, enduring, lasting)
4
unfading(stable, constant, enduring, lasting)
2
ageless(adjective, constant, endless, indefinite, lasting)
2
dateless(lasting, everlasting, unending, undying)
2
long-term
2
longstanding(adjective, enduring, recurrent, perpetual)
2
persisting(persistent, continuous, hardened, lasting)
2
relentless(lasting, everlasting, unending, undying)
1
deep-rooted(persistent, continuous, hardened, lasting)
1
fixed(adjective, stable, persistent, constant, hardened)
1
forever(stable, constant, enduring, lasting)
1
immemorial(lasting, everlasting, unending, undying)
1
indefinite(lasting, everlasting, unending, undying)
1
indelible(adjective, long-term, lifelong)
1
indissoluble(everlasting, eternal, long-term, undying)
1
inexhaustible(long-term, lifelong)
1
inexpungible(long-term, lifelong)
1
ongoing(long-term, lifelong)
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APASmart Define. (2015). perennial thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/perennial/thesaurus/synonyms
ChicagoSmart Define. 2015. "perennial thesaurus" https://smartdefine.org/perennial/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, perennial thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/perennial/thesaurus/synonyms>.
MLASmart Define. "perennial thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/perennial/thesaurus/synonyms>