Synonyms|715Antonyms|91|Broader|11Narrower|0Related|260

42 entries under persistent topic. ×

3
hard-shell(adjective, determined, impulsive, obstinate)
3
iron(adjective, obstinate, insistent, dogged)
3
relentless(tough, firm, obstinate, stubborn)
3
set(adjective, hard, tough, firm, solid)
3
single-minded(adjective, tough, firm, obstinate)
3
unregenerate(adjective, obstinate, insistent, dogged)
2
cussed(tough, firm, obstinate, stubborn)
2
exacting(adjective, tough, obstinate, problematic)
2
hard-line(difficult, awkward, obstinate, stubborn)
2
stern(adjective, obstinate, insistent, dogged)
1
anal-retentive(adjective, obstinate, insistent, dogged)
1
hard-shelled(adjective, obstinate, insistent, dogged)
1
hell-bent(adjective, obstinate, insistent, dogged)
1
hidebound(adjective, obstinate, insistent, dogged)
1
inveterate(adjective, obstinate, insistent, dogged)
1
invincible(adjective, obstinate, insistent, dogged)
1
narrow-minded(adjective, obstinate, insistent, dogged)
1
obsessive(adjective, obstinate, insistent, dogged)
1
stouthearted(adjective, obstinate, insistent, dogged)
1
strict(adjective, obstinate, insistent, dogged)
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APASmart Define. (2015). refractory thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/refractory/thesaurus/synonyms
ChicagoSmart Define. 2015. "refractory thesaurus" https://smartdefine.org/refractory/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, refractory thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/refractory/thesaurus/synonyms>.
MLASmart Define. "refractory thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/refractory/thesaurus/synonyms>