Pocket Thesaurus
Synonyms of rigid
adamant, adamantine, austere, bullheaded, changeless, chiseled, dead set, definite, determined, exact, firm, fixed, hard, hard-line, harsh, incompliant, inelastic, inexorable, inflexible, intransigent, invariable, locked in, obdurate, rigorous, set, set in stone, single-minded, solid, static, stern, strait-laced, stringent, tough nut to crack, unalterable, unbending, unbreakable, unchanging, uncompromising, undeviating, unmoving, unpermissive, unrelenting, unyielding
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