Synonyms|733Antonyms|207|Broader|5Narrower|0Related|193

74 entries under rigid topic. ×

1
dead set on(expression, adjective, idiom, severe, harsh)
1
disciplinary(adjective, tough, severe, firm, harsh)
1
dyed-in-the-wool(adjective, hard, severe, tight)
1
forbidding(adjective, tough, severe, firm, harsh)
1
grievous(adjective, hard, tough, severe, difficult)
1
hard-and-fast(adjective, set, hard, stiff)
1
hard-boiled(adjective, hard, tough, severe, sharp)
1
immovable(adjective, hard, inflexible, strict)
1
immutable(adjective, set, hard, stiff)
1
intractable(adjective, set, hard, stiff)
1
iron(adjective, set, hard, stiff)
1
iron-fisted(adjective, tough, severe, firm, harsh)
1
punctilious(adjective, hard, tough, severe, rough)
1
resolute(adjective, hard, inflexible, strict)
1
scrupulous(adjective, hard, tough, severe, rough)
1
staunch(adjective, set, hard, stiff)
1
steadfast(adjective, set, hard, stiff)
1
steely(adjective, set, hard, stiff)
1
stickling(adjective, tough, severe, firm, harsh)
1
unadaptable(adjective, set, hard, stiff)
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ChicagoSmart Define. 2015. "stringent thesaurus" https://smartdefine.org/stringent/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, stringent thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/stringent/thesaurus/synonyms>.
MLASmart Define. "stringent thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/stringent/thesaurus/synonyms>