adjective
Synonyms: inflexible 3, constant, fixed, immovable, immutable, inalterable, invariable, unalterable, unmodifiable, unmovable
Antonyms: changeable
adjective
Synonyms: inflexible 3, constant, fixed, immovable, immutable, inalterable, invariable, unalterable, unmodifiable, unmovable
Antonyms: changeable
Merriam Webster. Collegiate thesaurus English vocabulary. Английский энциклопедический словарь тезаурус. 2003