There are a variety of synonyms for the term "tiny waist." Some popular options include "slender waist," "waifish waist," "waistline," "hourglass figure," "svelte waist," and "petite waist." Depending on the context in which the term is used, other options might include "skinny waist," "waist cincher," or "corseted waist." Ultimately, the ideal term to use will depend on the tone of the piece, as well as the desired level of descriptive detail. Whatever the case, there are plenty of ways to describe a tiny waist, and these various synonyms provide plenty of options for writers and language enthusiasts alike.