smack talk noun 1verb 1forms 4 noun1 •(slang) Insulting speech, especially when intended to irritate or annoy someone. verb1 •(slang) To talk in an insulting way intended to irritate or annoy someone.I smartassed and smack-talked half of the interview, but as I relaxed a bit more and genuinely talked with them, a strange thing happened. — 2012 formssmack talked · smack talking · smack talks · smack-talks