Main entry: unchangeable
Definition: not changeable or subject to change
Usage: a fixed and unchangeable part of the germ plasm-Ashley Montagu; the unchangeable seasons; one of the unchangeable facts of life
Antonyms: changeable, changeful
Definition: such that alteration is possible; having a marked tendency to change
Antonyms: unstable
Definition: lacking stability or fixity or firmness
Antonyms: alterable
Definition: capable of being changed or altered in some characteristic
Antonyms: unconfirmed
Definition: not finally established or settled
Antonyms: unfixed
Definition: not firmly placed or set or fastened
Antonyms: unfrozen
Definition: not frozen