"Go ats" is a colloquial term meaning to start or begin an activity or task. However, there are many synonyms that can be used in its place. Some examples include: commence, initiate, inaugurate, kick-off, embark, launch, set in motion, get underway, and open up. Each of these synonyms has a slightly different connotation, with some implying more energy or enthusiasm than others. Ultimately, the choice of synonym will depend on the context and intention of the speaker or writer. It is always helpful to have a varied vocabulary, and using synonyms can add depth and nuance to one's language.