The phrase "art in brown study" is an idiom which means someone is deeply absorbed in thought or contemplation. Antonyms for this phrase would be words that represent the opposite of being preoccupied with thoughts. Some antonyms could include words like relaxed, carefree, carelessness, indifference or neglect. The opposite of absorbing in the imagination of the artist could be forgetting about art entirely or not being interested in it. Alternatively, one can use different words that represent the mood which is opposite to contemplation like agitation, disturbance, frustration, confusion, and agitated. Antonyms for "art in brown study" are essential in expressing an opposite mood of being lost in thought or artistic imagination.