54
forever(adjective, adverb, everlasting, endlessly, always)
17
everlastingly(adverb, usually, regularly, constantly, repeatedly)
16
perpetually(adverb, usually, regularly, constantly, continually)
13
endlessly(adverb, perpetually, infinitely, in perpetuity)
10
continually(adverb, perpetually, in perpetuity)
10
infinitely(adverb, perpetually, infinitely, in perpetuity)
9
evermore(adjective, adverb, always)
8
constantly(adverb, perpetually)
8
interminably(adverb, perpetually, infinitely, durably)
7
ceaselessly(adverb, perpetually, infinitely)
7
incessantly(adverb, perpetually, durably)
7
perennially(adverb, durably)
7
permanently(adverb, repeatedly, perpetually, infinitely, persistently)
7
unendingly(adverb, usually, regularly, constantly, repeatedly)
6
ever
6
forevermore(noun, adverb)
6
unceasingly(adverb, perpetually)
5
always
5
boundlessly(adverb, infinitely)
5
enduringly(adverb, repeatedly, perpetually, infinitely, persistently)
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APASmart Define. (2015). eternally thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/eternally/thesaurus/synonyms
ChicagoSmart Define. 2015. "eternally thesaurus" https://smartdefine.org/eternally/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, eternally thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/eternally/thesaurus/synonyms>.
MLASmart Define. "eternally thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/eternally/thesaurus/synonyms>