Fixed and Unmodifiable

Fixed adjective - Having been established and usually not subject to change.

Unmodifiable and fixed are semantically related in intent topic. In some cases you can use "Unmodifiable" instead an adjective "Fixed".

Nearby Words: fix, fixing, fixedly, fixation, fixer

Unmodifiable adjective - Incapable of being modified in form or character or strength (especially by making less extreme).

Fixed and unmodifiable are semantically related in constant topic. You can use "Fixed" instead an adjective "Unmodifiable", if it concerns topics such as consistent, unchangeable, not changing.