Definition of customable in English:

customable

Pronunciation /ˈkʌstəməbl/

adjective

  • Of goods: subject to customs duty; dutiable.

Origin

Late Middle English (in an earlier sense). From Anglo-Norman custumable, costumable, Anglo-Norman and Middle French coustumable dutiable, taxable, in accordance with custom, customary, accustomed to something, partly from costume, custume, coustume + -able, and partly from coustumer, custumer + -able.