The phrase "art loggerheads" is an idiom that is used to describe a situation where two people or groups are in a state of disagreement or conflict. The word "loggerheads" refers to a type of iron tool that was used for heating tar, which was then used for sticking things together. The antonyms for the phrase "art loggerheads" could include words like harmony, concord, agreement, accord, and peace. These words describe a situation where there is unity, understanding, and cooperation between two individuals or groups. Antonyms for "art loggerheads" indicate a positive outcome where there is no disagreement or conflict.