1
immortal
1
imperishably
1
in perpetuum(adverb, repeatedly, infinitely, persistently, incessantly)
1
incessant
1
indissolubly
1
inflexibly
1
invariantly
1
irretrievably
1
irreversibly
1
irrevocably
1
lasting
1
livelong
1
necessarily
1
never-endingly
1
now and forever(adverb, repeatedly, infinitely, persistently, incessantly)
1
on and on(adverb, repeatedly, infinitely, persistently, incessantly)
1
perdurably
1
perennial
1
permanent
1
rigidly
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APASmart Define. (2015). permanently thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/permanently/thesaurus/synonyms
ChicagoSmart Define. 2015. "permanently thesaurus" https://smartdefine.org/permanently/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, permanently thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/permanently/thesaurus/synonyms>.
MLASmart Define. "permanently thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/permanently/thesaurus/synonyms>