65 entries under rigid topic. ×

3
steady(adjective, resolute)
3
unwavering(adjective, resolute)
2
disciplinary(adjective, tough, severe, firm, harsh)
2
exact
2
fixed
2
no-nonsense(adjective, set, tough, severe, firm)
2
strong(adjective, severe, violent, brutal)
2
stuffy(adjective, tough, severe, firm, harsh)
2
uptight(adjective, tough, severe, firm, harsh)
1
concrete
1
dead set(expression, adjective, tough, severe, firm)
1
definite
1
grievous(adjective, tough, severe, harsh, cruel)
1
iron-fisted(adjective, tough, severe, firm, harsh)
1
picky(adjective, tough, severe, firm, harsh)
1
scrupulous(adjective, hard, tough, severe, rough)
1
solid
1
square(adjective, tough, severe, firm, harsh)
1
taut
1
tense
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APASmart Define. (2016). stern thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/stern/thesaurus/synonyms
ChicagoSmart Define. 2016. "stern thesaurus" https://smartdefine.org/stern/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, stern thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/stern/thesaurus/synonyms>.
MLASmart Define. "stern thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/stern/thesaurus/synonyms>