101 entries under grim topic. ×

8
hardheaded(adjective, strong, hard, tough, determined)
7
pigheaded(adjective, mean, hard, tough, firm)
6
cold(adjective, hard, cool, severe, harsh)
6
persevering(adjective, tough, firm, determined, unreasonable)
5
difficult(adjective, hard, tough, severe, rough)
5
sharp(adjective, hard, correct, severe, rough)
5
unfeeling(adjective, mean, hard, cool, severe)
4
astringent(adjective, strong, hard, tough, severe)
4
fastidious(adjective, tough, particular, problematic)
4
rugged(adjective, strong, hard, tough, severe)
3
bleak(adjective, hard, severe, sharp, flat)
3
cussed(adjective, severe, firm, unreasonable)
3
flat(adjective, hard, severe, sharp, rough)
3
serious(adjective, strong, hard, tough, severe)
2
bitter(adjective, set, strong, hard, tough)
2
perverse(adjective, mean, hard, tough, firm)
2
rough(adjective, strong, hard, tough, severe)
1
acrid(adjective, hard, severe, sharp, flat)
1
arduous(adjective, hard, tough, severe, rough)
1
asperous(adjective, hard, severe, sharp, flat)
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APASmart Define. (2015). rigid thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/rigid/thesaurus/synonyms
ChicagoSmart Define. 2015. "rigid thesaurus" https://smartdefine.org/rigid/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, rigid thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/rigid/thesaurus/synonyms>.
MLASmart Define. "rigid thesaurus" 3 August 2015. Web. 24 September 2026. <https://smartdefine.org/rigid/thesaurus/synonyms>