æˈvɑ̃t.ɡɑːd ˌɑˌvɑntˈɡɑɹd æˈvɑ̃t.ɡɑːd ˌɑˌvɑntˈɡɑɹd ˈdɛəɹɪŋ ˈdɛəɹɪŋ ˈvænˌɡɑɹd ˈvanˌɡɑːd ˈvɛnˌɡɐːd radically new or original an avant-garde theater piece any creative group active in the innovation and application of new concepts and techniques in a given field (especially in the arts)