Oxford Dictionary English back talk nounnoun BrE BrE//ˈbæk tɔːk// ; NAmE NAmE//ˈbæk tɔːk// (North American English) (British English backchat) [uncountable] (informal) Add to my wordlistjump to other resultsa way of answering that shows no respect for somebody in authoritySee back talk in the Oxford Advanced American DictionaryCheck pronunciation: back talk oxfordlearnersdictionaries.com