Synonyms of rigid in English:

rigid


See US English definition of rigid

See UK English definition of rigid

See Spanish definition of rígido

adjective

1‘sandwiches are best packed in a rigid container’

SYNONYMS
stiff, hard, firm, inflexible, non-flexible, unbending, unyielding, inelastic
taut, tight
rare impliable, unmalleable
ANTONYMS

flexible, plastic

2‘many dog owners establish a rigid routine for feeding’

SYNONYMS
fixed, set, firm, inflexible, unalterable, unchangeable, immutable, unvarying, invariable, hard and fast, cast-iron
ANTONYMS

flexible

3‘poorer nations warned against a rigid approach to IMF funding’

SYNONYMS
strict, severe, stern, stringent, rigorous, inflexible, uncompromising, resolute, determined, immovable, unshakeable
unrelenting, intransigent, unyielding, unwavering, unswerving, obdurate, unadaptable, adamant
ANTONYMS

flexible, lenient