10 letters · 18 points in Scrabble
adjective capable of or tending to change in form or quality or nature
adjective such that alteration is possible; having a marked tendency to change
adjective subject to change
originFrom Middle English chaungeable, from Old Northern French chaungeable, from Late Latin cambiāre (“to change”), equivalent to change + -able.
Etymology from Wiktionary, CC BY-SA 3.0