Synonyms of inflexible in English:

inflexible


See definition of inflexible

adjective

1‘the committee's inflexible attitude’

SYNONYMS
stubborn, obstinate, obdurate, intractable, intransigent, unbending, immovable, inexorable, unadaptable, unaccommodating
hidebound, set in one's ways, blinkered, single-minded, pig-headed, mulish
uncompromising, dogged, adamant, firm, resolute, diehard, steely, iron-willed, dyed-in-the-wool
formal refractory
ANTONYMS

flexible, accommodating

2‘a landlady with inflexible house rules’

SYNONYMS
unalterable, unchangeable, unvarying, unwavering, unshakeable, entrenched
firm, fixed, set, established, hard and fast, uncompromising
stringent, rigorous, strict, severe, inexorable, immutable
ANTONYMS

flexible

3‘an inflexible metal plate’

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

flexible, pliable