Compare unalterable with other words:
dogged vs. unalterable
unalterable vs. unmodifiable
indoles vs. unalterable
immovable vs. unalterable
perpetuity vs. unalterable
alterable vs. unalterable
inalterable vs. unalterable
irreversible vs. unalterable
irrevocable vs. unalterable
changing vs. unalterable
altered vs. unalterable
incapable vs. unalterable
unalterable vs. variable
invariable vs. unalterable
incorrigible vs. unalterable