9 entries under durably topic. ×

17
everlastingly(adverb, usually, regularly, constantly, repeatedly)
16
perpetually(adverb, usually, regularly, constantly, continually)
8
interminably(adverb, perpetually, infinitely)
7
incessantly(adverb, perpetually)
7
perennially
3
durably
3
lastingly(adverb, perpetually)
1
endurably
1
lengthily
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APASmart Define. (2015). eternally thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/eternally/thesaurus/synonyms
ChicagoSmart Define. 2015. "eternally thesaurus" https://smartdefine.org/eternally/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, eternally thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/eternally/thesaurus/synonyms>.
MLASmart Define. "eternally thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/eternally/thesaurus/synonyms>