The word "be musing" refers to something that is captivating or thought-provoking. Its antonyms would be words that describe something that is boring or uninteresting. Some antonyms for "be musing" could include words such as mundane, tedious, monotonous, uninspiring, or unstimulating. These words describe things that lack excitement or intellectual stimulation, and fail to capture one's interest or attention. Opposite of "be musing," these words would be used to describe tasks or experiences that are dull, unengaging, or unremarkable. To find the opposite of "be musing," consider words that describe something that would cause someone to feel disinterested or bored.