# immutability

> English word · Noun · frequency rank #94,985

## Definitions
1. The state or quality of being immutable; immutableness.
2. The state of being unchangeable in the memory after creation.

## Etymology
Borrowed from Middle French immutabilité, itself borrowed from Latin immūtābilitās. By surface analysis, immutable + -ity.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/immutability