Definition of Callipygian: Callipygian (adjective): Having well-shaped, beautiful buttocks. Synonyms: shapely, curvaceous, well-formed Antonyms: flat, unshapely, unattractive Memory Tip: Think of “callipygian” as combining “calli” (beautiful) and “pygian” (related to the buttocks), making it a term that describes someone with a well-shaped posterior. Conversation and Short Story Examples Here is how “callipygian” can be used…