1
deep-rooted(permanent, long-term, lifelong)
1
determined(adjective, strong, firm, energetic, vigorous)
1
devoted(adjective, strong, firm, determined, steady)
1
durative
1
eager beaver(expression, adjective, strong, firm, determined)
1
eterne
1
ever-being
1
ever-durable
1
ever-during
1
everliving
1
fervent
1
fierce(adjective, hard, tough, harsh, cruel)
1
fireball(adjective, strong, firm, determined, steady)
1
fixed(adjective, determined, steady, resolute, persistent)
1
forbidding(adjective, hard, tough, harsh, cruel)
1
forever(relentless, lasting, permanent, on, everlasting)
1
go-go(adjective, strong, firm, determined, steady)
1
grim(adjective, hard, tough, harsh, persistent)
1
grind(adjective, strong, firm, determined, steady)
1
hanging tough(expression, adjective, persistent, constant, pitiless)
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APASmart Define. (2015). unremitting thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/unremitting/thesaurus/synonyms
ChicagoSmart Define. 2015. "unremitting thesaurus" https://smartdefine.org/unremitting/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, unremitting thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/unremitting/thesaurus/synonyms>.
MLASmart Define. "unremitting thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/unremitting/thesaurus/synonyms>