Simple Definition of immutable
: unable to be changed
Examples of immutable in a sentence
the immutable laws of nature
<one of the immutable laws of television is that low ratings inevitably lead to cancellation>
Did You Know?
Immutable comes to us through Middle English from Latin immutabilis, meaning "unable to change." "Immutabilis" was formed by combining the negative prefix in- with "mutabilis," which comes from the Latin verb mutare and means "to change." Some other English words that can be traced back to "mutare" are "commute" (the earliest sense of which is simply "to change or alter"), "mutate" ("to undergo significant and basic alteration"), "permute" ("to change the order or arrangement of"), and "transmute" ("to change or alter in form, appearance, or nature"). There's also the antonym of "immutable" - "mutable" - which of course can mean "prone to change" and "capable of change or of being changed."
Origin of immutable
Middle English, from Latin immutabilis, from in- + mutabilis mutable
First Known Use: 15th century
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