Able to change or be changed; not staying the same.
From Middle English changeable, combining change (from Old French changier) and the suffix -able meaning capable of. The root ultimately traces to Latin cambire (to exchange).
The word changeable has an interesting opposite problem—'changeable' can mean both 'able to be changed' and 'tending to change frequently,' which makes it ambiguous in a way that's actually useful in English because context solves it.
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