ˈbæk.tʃæt ˈbæntə ˈbæntɚ dɪˈskʌʃən ɪntə(ɹ)ˈtʃeɪndʒ ɪntɚˈtʃeɪndʒ ˈɹeɪləɹi mutual interaction; the activity of reciprocating or exchanging (especially information) light teasing repartee an exchange of views on some topic we had a good discussion we had a word or two about it