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

40 entries under constant topic. ×

8
long-lasting(adjective, continue, familiar, enduring)
8
perdurable(adjective, continue, stable, enduring)
6
stable(adjective, stability, enduring, lasting)
6
timeless(adjective, endless, indefinite, lasting)
5
immutable(adjective, stable, stability, enduring)
5
invariable(adjective, stable, continuous, stability)
4
indestructible(adjective, stable, enduring, lasting)
4
unfading(stable, enduring, lasting, permanent)
2
ageless(adjective, endless, indefinite, lasting)
2
changeless(adjective, stable, enduring, lasting)
2
perduring(stable, enduring, lasting, durable)
2
steadfast(stable, enduring, lasting, perpetual)
1
diurnal(stable, enduring, lasting, durable)
1
fixed(adjective, stable, persistent, hardened)
1
for keeps(expression, stable, enduring, lasting)
1
forever(stable, enduring, lasting, permanent)
1
forever and a day(expression, idiom, stable, lasting)
1
set(stable, hardened, enduring, lasting)
0
set in concrete(expression, stable, enduring, lasting)
0
set in stone(expression, idiom, stable, lasting)
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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>