The word "discoursing" refers to the act of speaking or communicating at length. Antonyms for this word may include words that mean the opposite or convey a lack of communication or conversation. Some examples of antonyms for "discoursing" might include "silence," "mute," "inarticulate," "uncommunicative," or "nonverbal." These words all suggest a lack of conversation or communication, either due to a person's behavior or an external circumstance. Alternatively, other antonyms might include words like "brief," "concise," "succinct," or "terse," which all suggest a brevity or efficiency of speech, rather than an extended or detailed conversation.