Definition of immutable adjective from the Oxford Advanced Learner's Dictionary



BrE BrE//ɪˈmjuːtəbl//
; NAmE NAmE//ɪˈmjuːtəbl//
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that cannot be changed; that will never change synonym unchangeable This decision should not be seen as immutable. Word Originlate Middle English: from Latin immutabilis, from in- ‘not’ + mutabilis, from mutare ‘to change’.
See the Oxford Advanced American Dictionary entry: immutable