"At about" is a frequently used phrase in English, and its synonyms can be quite useful in making your speech or writing more varied and interesting. Some possible synonyms for "at about" might include "around," "approximately," "roughly," "more or less," "nearly," "almost," "just about," or "close to." Each of these phrases has its own nuanced meaning, and choosing the right one will depend on the context in which you are using it. By incorporating these synonyms into your vocabulary, you can add variety and precision to your language and express yourself more effectively.