Main Entry: dis·loy·al

Pronunciation: \(ˌ)dis-ˈlȯi(-ə)l\

Function: adjective

Etymology: Middle English, from Anglo-French desleial, desloial, from des- dis- + leal loyal

Date: 15th century

: lacking in loyalty; also : showing an absence of allegiance, devotion, obligation, faith, or support <his disloyal refusal to help his friend>

synonyms see faithless

— dis·loy·al·ly \-ˈlȯi-ə-lē\ adverb