Art in on means having a skill or ability to do something well. There are various synonyms for this phrase that can be used depending on the context of the sentence. Some of these synonyms include talented, proficient, skilled, gifted, accomplished, competent, adroit, dextrous, capable, able, expert, and masterful. These synonyms are often used to describe people who do their job exceptionally well or have a natural talent for a certain activity, such as music, writing, or painting. Using synonyms for art in on can help add variety and depth to your writing, making it more interesting and engaging to read.