Main Entry:

im·mu·ta·ble

Pronunciation:

\(ˌ)i(m)-ˈmyü-tə-bəl\

Function:

adjective

Etymology:

Middle English, from Latin immutabilis, from in- + mutabilis mutable

Date:

15th century

: not capable of or susceptible to change

— im·mu·ta·bil·i·ty \-ˌmyü-tə-ˈbi-lə-tē\ noun

— im·mu·ta·ble·ness \-ˈmyü-tə-bəl-nəs\ noun

— im·mu·ta·bly \-blē\ adverb