1
flatly(adverb, continuously)
1
for keeps
1
frequent
1
homogeneously(adverb, continuously)
1
hour after hour(expression, idiom)
1
illimitably(adverb, infinitely)
1
immeasurably(adverb, infinitely)
1
immortally
1
imperishably
1
incalculably(adverb, infinitely)
1
incessant
1
indefatigably(adverb, continuously)
1
indelibly
1
indestructibly
1
inexhaustibly(adverb, infinitely)
1
infernally
1
inflexibly
1
innumerably(adverb, infinitely)
1
invariantly
1
lasting
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APASmart Define. (2015). perpetually thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/perpetually/thesaurus/synonyms
ChicagoSmart Define. 2015. "perpetually thesaurus" https://smartdefine.org/perpetually/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, perpetually thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/perpetually/thesaurus/synonyms>.
MLASmart Define. "perpetually thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/perpetually/thesaurus/synonyms>