Part of speech: adjective
Origin: Middle English, 15th century
Unchanging over time or unable to be changed.
Examples of Immutable in a sentence
"The mission of the nonprofit has remained immutable since its founding."
"You can try to change his mind, but I think he's immutable."
In Latin, "mutare" means "to change," which is likely recognizable from the popular mutant superheroes known as the X-Men. Add the Latin prefix "im-" for "not," and you get the unchanging "immutable." If you're immutable, there's no chance of shapeshifting as your superpower.
Did you Know?
There are a batch of words that can be traced back to the Latin root "mutare," which means "to change." "Immutable" means "unchanging," "mutate" means "to undergo significant changes," "permute" is "to change the order," and "transmute" is "to change in nature or appearance." Change is good.