adjective
1.
Synonyms: stiff 1, immalleable, impliable, incompliant, inelastic, inflexible, unbending, unflexible, unyielding
Related Word: firm, hard, solid
Antonyms: elastic
2.
Synonyms: inflexible 2, adamant, inexorable, obdurate, relentless, single-minded, unbending, uncompliant, uncompromising, unyielding
3.
extremely severe or stern
was regarded as a rigid disciplinarian
Synonyms: draconian, ironhanded, rigorist, rigorous, strict, stringent, unpermissive
Related Word: austere, severe, stern; hard-line, inflexible, tough, uncompromising, unyielding; adamant, adamantine, inexorable, obdurate
Contrasted words: humoring, indulgent, pampering; loose, relaxed; easy, gentle, mild
Antonyms: lax