The antonyms for the phrase "art lost in thought" can be categorized into two groups: those that describe a lack of artistic thought and those that describe overly active artistic expression. For the first group, possible antonyms could be "artless," "uncreative," "unimaginative," or "uninspired." These words suggest a lack of depth and creativity in artistic expression. In contrast, words like "distracted," "scatterbrained," and "unfocused" could be antonyms for the phrase, indicating an excess of artistic thought that takes away from the actual creation process. Overall, the antonyms for "art lost in thought" depend on the context and the desired emphasis of the opposite statement.