5
limitlessly(adverb, infinitely)
5
regularly(adverb, continuously)
4
ad infinitum(expression, adjective, idiom, adverb, infinity)
4
perennially(adverb, continuously, durably)
4
permanently(adverb, perpetually)
4
steadily(adverb, continuously)
4
unremittingly(adverb, relentless, continuously, forever, constantly)
3
consistently(adverb, continuously)
3
cyclically(adverb, continuously)
3
enduringly(adverb, perpetually)
3
immensely
3
immortally(adverb, perpetually)
3
inexhaustibly(adverb, infinitely)
3
lastingly(adverb, continuously, perpetually, durably)
3
lengthily(adverb, durably)
3
monotonously(adverb, continuously)
3
on and on(expression, idiom, adverb, endlessly, continuously)
3
repetitively(adverb, continuously)
3
timelessly(adverb, infinitely)
3
unboundedly(adverb, infinitely)
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APASmart Define. (2015). interminably thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/interminably/thesaurus/synonyms
ChicagoSmart Define. 2015. "interminably thesaurus" https://smartdefine.org/interminably/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, interminably thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/interminably/thesaurus/synonyms>.
MLASmart Define. "interminably thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/interminably/thesaurus/synonyms>