"Put on airs" is a phrase that refers to someone trying to act superior or better than others. There are many synonyms for it that describe the same behavior. Some of the most commonly used synonyms for this phrase are pretentious, haughty, arrogant, conceited, snobbish, affected, ostentatious, and pompous. All these synonyms indicate someone who acts as if they are better than others or have a higher social status. It's essential to choose the right synonym depending on the context and tone of the sentence. Using synonyms for "puts on airs" can add variety and interest to your writing.