French word mettable comes from French mettre, French -able (-able.)

Detailed word origin of mettable

Dictionary entry	Language	Definition
mettre	French (fra)	(pronominal) to start (+ à) (something / doing something), to get around to doing something. (transitive) to put; to place. (transitive) to set (to lay a table). (transitive, of clothing) to put on.
-able	French (fra)	-able.
mettable	French (fra)	(clothing) wearable.

Words with the same origin as mettable