cus·tom·ar·y 
(kŭstə-mĕr′ē)
(kŭstə-mĕr′ē)adj.
1. Commonly practiced, used, or encountered; usual. See Synonyms at usual.
2. Based on custom or tradition rather than written law or contract.
cus′tom·ari·ly (-mâr′ə-lē) adv.
custom·ar′i·ness n.