Hard And Fast Thesaurus / Synonyms / page 3

1	mandatory
1	obligatory
1	official
1	on the rocks(expression, idiom)
1	peremptory
1	preceptive
1	prescribed
1	prescript
1	prescriptive
1	regulation
1	required
1	rigorous
1	rubric
1	set(adjective, firm, inflexible, strict, hardened)
1	standard
1	statutory
1	ultimate
1	unyielding(adjective, firm, solid, stiff, inflexible)
1	without appeal
0	adamant

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APA	Smart Define. (2015). hard and fast thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/hard_and_fast/thesaurus/synonyms
Chicago	Smart Define. 2015. "hard and fast thesaurus" https://smartdefine.org/hard_and_fast/thesaurus/synonyms (accessed September 27, 2026).
Harvard	Smart Define 2015, hard and fast thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/hard_and_fast/thesaurus/synonyms>.
MLA	Smart Define. "hard and fast thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/hard_and_fast/thesaurus/synonyms>

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