The Collaborative International Dictionary
Immute
Immute \Im*mute"\ ([i^]m*m[=u]t"), v. t. [L. immutare,
immutatum; perf. im- in + mutare to change : cf. OF.
immuter.]
To change or alter. [Obs.]
--J. Salkeld.
Wiktionary
immute
vb. (context obsolete transitive English) To change or alter.