The antonyms for the word "art tense" are diverse, but all relate to the idea of releasing tension or being relaxed. Some of the antonyms include calm, tranquil, peaceful, serene, and composed. These words describe a state of mind or an environment in which there is no stress or strain. Another antonym for "art tense" is carefree, implying a lack of worry or responsibility. Other antonyms include easy, effortless, and simple, all of which describe a state of being that requires little effort or struggle. Overall, the antonyms for "art tense" indicate a state of mind that is at ease and free from strain.