Definition of "backtalk"

backtalk

/bæk.tɔːk/

noun
uncountable
1. (US) Verbal impudence or argumentative discourse, given in response.
  Quotations
  He scratched his head. "Well, damn me," said he. "I never thought I would take orders from a Chink, but he says 'hist!' and by crums you've got to hist and no back talk either."
  1925 July – 1926 May, A[rthur] Conan Doyle, “(please specify the chapter number)”, in The Land of Mist (eBook no. 0601351h.html), Australia: Project Gutenberg Australia, published April 2019
verb
third-person singular simple present backtalks, present participle backtalking, simple past and past participle backtalked
1. (transitive) To respond to in an aggressively disputatious, often sarcastic or insolent manner.