157 entries under persistent topic. ×

1
pat(adjective, serious, resolute, unwavering)
1
prolonged(steady, stable, regular, lasting)
1
protracted(continuous, endless, lasting, infinite)
1
regularized(adjective, fixed, continuous, endless)
1
remorseless(adjective, pitiless, unyielding, endless)
1
set on(expression, adjective, serious, resolute)
1
solid as rock(expression, adjective, idiom, calm, substantial)
1
standardized(adjective, ordinary, usual, fixed, normal)
1
stiff-necked(adjective, pitiless, unyielding, endless)
1
unabated(adjective, pitiless, unyielding, endless)
1
unmitigated(abundant, continuous, unrestrained, lasting)
1
unquestioning(adjective, set, clear, firm, solid)
1
wholehearted(adjective, complete, firm, honest, sensible)
0
hard as nails(expression, idiom, serious, resolute)
0
haunting(lasting, remaining)
0
ironfisted
0
merciless(adjective, pitiless, unyielding, endless)
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APASmart Define. (2016). constant thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/constant/thesaurus/synonyms
ChicagoSmart Define. 2016. "constant thesaurus" https://smartdefine.org/constant/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, constant thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/constant/thesaurus/synonyms>.
MLASmart Define. "constant thesaurus" 12 February 2016. Web. 20 September 2026. <https://smartdefine.org/constant/thesaurus/synonyms>