Synonyms|1kAntonyms|253|Broader|5Narrower|1Related|546

146 entries under strict topic. ×

7
grim(adjective, strong, hard, tough, severe)
7
inexorable(adjective, strong, hard, tough, severe)
7
letter-perfect(adjective, exact, scrupulous, detailed)
7
literal(noun, adjective, correct, solid, perfect)
7
obstinate(adjective, hard, severe, resolute, rigid)
7
point-device(adjective, exact, scrupulous, detailed)
7
precision(adjective, exact, scrupulous, detailed)
7
right on target(adjective, exact, scrupulous, detailed)
7
true blue(adjective, exact, scrupulous, detailed)
7
well-directed(adjective, exact, scrupulous, detailed)
6
adamant(adjective, strong, hard, tough, harsh)
6
astringent(adjective, strong, hard, tough, severe)
6
burdensome(adjective, hard, severe, rough, difficult)
6
fussy(adjective, harsh, thoughtful, sober, rigid)
6
onerous(adjective, hard, severe, rough, difficult)
6
true(noun, adjective, correct, right, appropriate)
6
unrelenting(adjective, strong, hard, tough, severe)
5
Draconian(adjective, tough, severe, firm, harsh)
5
extreme(adjective, severe, harsh, cruel, brutal)
5
immovable(adjective, set, strong, hard, tough)
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APASmart Define. (2016). rigorous thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/rigorous/thesaurus/synonyms
ChicagoSmart Define. 2016. "rigorous thesaurus" https://smartdefine.org/rigorous/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, rigorous thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/rigorous/thesaurus/synonyms>.
MLASmart Define. "rigorous thesaurus" 26 February 2016. Web. 23 September 2026. <https://smartdefine.org/rigorous/thesaurus/synonyms>