Hard-and-fast Thesaurus / Synonyms / page 2

1	entailed
1	fixed(adjective, set, hard, certain, stiff)
1	hard(resolute, rigid, inflexible, strict, obstinate)
1	hard and fast(expression, idiom)
1	immutable(adjective, set, hard, stiff, rigid)
1	imperative
1	imposed
1	intractable(adjective, set, hard, stiff, rigid)
1	invariable
1	iron(adjective, set, hard, stiff, rigid)
1	mandated
1	obligatory
1	obstinate(adjective, set, hard, stiff, rigid)
1	peremptory
1	prescriptive
1	required
1	rigid(hard, inflexible, strict, obstinate, stubborn)
1	settled
1	single-minded(adjective, set, hard, stiff, rigid)
1	staunch(adjective, set, hard, stiff, rigid)

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APA	Smart Define. (2015). hard-and-fast thesaurus. Retrieved September 28, 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 28, 2026).
Harvard	Smart Define 2015, hard-and-fast thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/hard-and-fast/thesaurus/synonyms>.
MLA	Smart Define. "hard-and-fast thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/hard-and-fast/thesaurus/synonyms>

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