The phrase "be air" can have various meanings, but when it comes to synonyms, we can look at its different interpretations. One of which is the feeling of being light and carefree, in which case synonyms may include buoyancy, weightlessness, and freedom. Another interpretation could be to project an appearance or atmosphere of something, where synonyms might include embody, exude, and represent. Additionally, some might interpret "be air" as a way of describing movement or a sense of fluidity, leading to synonyms such as flow, glide, and drift. Ultimately, the synonyms for "be air" may depend on how it is being used, and the intended context of the phrase.