Synonyms of unchangeable in English:

unchangeable


See definition of unchangeable

adjective

1‘many people think of personality characteristics as virtually unchangeable’

SYNONYMS
unalterable, immutable, invariable, unvarying, invariant, changeless, firm, fixed, hard and fast, cast-iron, set in stone, set, decided, established, permanent, deep-rooted, enduring, abiding, lasting, indestructible, ineradicable, irreversible, unfading, constant, perpetual, eternal, lifelong
rare incommutable, perdurable
ANTONYMS

variable, changeable