adjective. not changeable or subject to change.
- carved in stone
- set in stone
- changeable (English)
- -able (English)
- un- (English)
- on- (Middle English (1100-1500))
Example sentences of the word unchangeable
Since an irrevocable trust is unchangeable, you can't borrow from the cash value if the grantor didn't set this up when the trust was originally created.