70 entries under persistent topic. ×

4
even(verb, adjective, sound, steady, stable)
4
monotonous(adjective, steady, stable, regular, fixed)
3
persisting(adjective, determined, steady, stable)
2
connected(adjective, steady, stable, regular, fixed)
2
homogeneous(adjective, dull, steady, stable, regular)
1
bound(adjective, determined, steady, resolute)
1
bound and determined(expression, adjective, idiom, determined)
1
equable(adjective, dull, steady, stable, regular)
1
hanging tough(expression, adjective, constant, pitiless)
1
hard-headed(adjective, constant, pitiless, unyielding)
1
intransigent(adjective, constant, pitiless, unyielding)
1
iron-fisted(adjective, constant, pitiless, unyielding)
1
like the Rock of Gibralter(expression, adjective, idiom, steady, stable)
1
merciless(adjective, constant, pitiless, unyielding)
1
monochrome(adjective, dull, steady, stable, regular)
1
monophonic(adjective, dull, steady, stable, regular)
1
neverending(adjective, present, constant, continuous)
1
of a piece(expression, adjective, idiom, steady, stable)
1
regularized(adjective, dull, steady, stable, regular)
1
remorseless(adjective, constant, pitiless, unyielding)
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APASmart Define. (2016). perpetual thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/perpetual/thesaurus/synonyms
ChicagoSmart Define. 2016. "perpetual thesaurus" https://smartdefine.org/perpetual/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, perpetual thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/perpetual/thesaurus/synonyms>.
MLASmart Define. "perpetual thesaurus" 30 March 2016. Web. 23 September 2026. <https://smartdefine.org/perpetual/thesaurus/synonyms>