Immutable
/ɪˈmjuː.tə.bəl/noun
Not capable of being changed or altered.
Did you know?Its Latin roots hide a tiny act of resistance: mutāre meant “to change,” and the prefix im- simply shuts the door, making immūtābilis literally “not changeable.”
Etymological Timeline
Proto-Indo-European
PIE
*meu-
“to change, move, exchange”
Latin
Latin
mūtāre
“to change, alter”
Late Latin
Latin
immūtābilis
“unchangeable, immutable”
Old French
Old French
immutable
“unchangeable”
Middle English
English
immutable
“unchangeable, fixed”
Modern English
English
immutable
“not capable of being changed or altered”