The antonyms for "art source of" can vary depending on the context in which the phrase is used. For example, if the phrase is used in reference to a museum or gallery, the antonym could be something like "non-artistic" or "uncreative". On the other hand, if the phrase is used in reference to a person or artist, the antonym may be "artless" or "inartistic". In general, antonyms for "art source of" could include words like "lacking creativity", "uninspired", "unimaginative", or "unoriginal". These antonyms imply a lack of artistic ability or inspiration, and suggest that the work produced is not of artistic merit.