Synonyms|827Antonyms|121|Broader|4Narrower|7Related|531

76 entries under firm topic. ×

4
balky(adjective, tough, negative, hostile)
4
cussed(tough, persistent, obstinate, stubborn)
4
grim(adjective, appearance, tough, cruel)
4
inelastic(adjective, tough, fixed, distant)
4
single-minded(adjective, tough, unreasonable, grim)
3
adamantine(hard, tough, unreasonable, grim)
3
bullheaded(adjective, tough, indifferent, deliberate)
3
hard-line(adjective, tough, difficult, persistent)
3
iron(adjective, tough, unreasonable, grim)
3
opinionated(adjective, mean, tough, violent)
2
persevering(adjective, tough, unreasonable, grim)
2
remorseless(adjective, tough, cruel, unreasonable)
2
unflexible(adjective, tough, fixed, distant)
1
aloof(adjective, tough, fixed, rigid)
1
crisp(adjective, tough, fixed, distant)
1
dead set on(determined, fixed, resolute, stubborn)
1
distant(adjective, tough, fixed, rigid)
1
do or die(expression, adjective, idiom, tough)
1
dug in(expression, adjective, tough, distant)
1
formal(adjective, strong, tough, cold)
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HarvardSmart Define 2015, intractable thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/intractable/thesaurus/synonyms>.
MLASmart Define. "intractable thesaurus" 24 June 2015. Web. 25 September 2026. <https://smartdefine.org/intractable/thesaurus/synonyms>