from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Not to be altered; immutable: the unchangeable seasons.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Not changeable; incapable of being changed or of changing; immutable.
from The Century Dictionary and Cyclopedia
- Not capable of change; immutable; not subject to variation: as, God is an unchangeable being.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. not changeable or subject to change
un- + changeable (Wiktionary)