immutableadjective
uk/ɪˈmjuː.tə.bəl/us/ɪˈmjuː.t̬ə.bəl/formalnot changing, or unable to be changed:
an immutable law
Some people regard grammar as an immutable set of rules.
Thesaurus: synonyms and related words
Not able to be changed
- a leopard can't/doesn't change its spots idiom
- be no hard and fast rules idiom
- burn your boats/bridges idiom
- congenital
- continuity
- fixed
- fixity
- hard line
- hard line
- incorrigible
- incurable
- irreducible
- irremediable
- irreparable
- irretrievable
- irreversible
- ossify
- stuck
- uncompromising
- what's done is done idiom
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immutability
noun [ U ] uk/ɪˌmjuː.təˈbɪl.ə.ti/us/ɪˌmjuː.t̬əˈbɪl.ə.t̬i/