Astaire is a proper noun and a famous last name. As such, there is no direct synonym for the word Astaire, although some words that can be associated with it are elegance, grace, dance, and music. When referring to the legendary dancer and actor Fred Astaire, some possible synonyms that could be used to describe him are talented, charismatic, skilled, dapper, debonair, and iconic. Additionally, if one wishes to refer to someone as an Astaire-type of performer, other possible synonyms could include agile, nimble, adept, suave, and polished. Ultimately, the connotation and meaning of a word are shaped by its context and usage.