Synonyms|718Antonyms|124|Broader|10Narrower|0Related|388

43 entries under permanent topic. ×

9
continuing(adjective, wild, familiar, stable, fixed)
9
immutable(adjective, steady, stable, regular, fixed)
9
regular(verb, adjective, sound, usual, steady)
7
changeless(adjective, set, stable, regular, fixed)
7
standing(verb, adjective, established)
6
inexhaustible(adjective, absolute, endless, immense, infinite)
6
ongoing(adjective, continue, constant, current, continuous)
6
unchangeable(adjective, set, regular, fixed, constant)
5
lifelong(adjective, familiar, established, durable)
5
perdurable(adjective, stable, constant, endless, enduring)
4
indissoluble(adjective, enduring, everlasting, eternal)
4
long-term(adjective, lifelong)
3
old(adjective, familiar, established, traditional)
3
persisting(adjective, determined, steady, stable, persistent)
2
deep-rooted(adjective, long-term, lifelong)
1
all-time(adjective, unsurpassed)
1
forever(stable, constant, enduring, lasting)
1
indelible(long-term, lifelong)
1
inexpungible(long-term, lifelong)
1
longstanding(recurrent, long-term, lifelong, returning)
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APASmart Define. (2016). perpetual thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/perpetual/thesaurus/synonyms
ChicagoSmart Define. 2016. "perpetual thesaurus" https://smartdefine.org/perpetual/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, perpetual thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/perpetual/thesaurus/synonyms>.
MLASmart Define. "perpetual thesaurus" 30 March 2016. Web. 26 September 2026. <https://smartdefine.org/perpetual/thesaurus/synonyms>