Duologues, also called dialogues or conversations between two people, have several antonyms. Firstly, monologues can be considered antonyms to duologues, as they involve a single person speaking rather than a conversation. Secondly, group discussions, debates, or forums could be antonyms of duologues because they involve more than two individuals. Third, solitary or solitary work is an opposite to duologues as it implies working alone. Fourth, silence or quietness is also considered antonyms to duologues, since it represents complete absence or lack of conversation. Overall, duologues are often contrasted with single-person speaking, group communication, individual work, and silence.