Superlative form meaning having the most prominent chin or the most chin-like qualities.
From 'chin' (the lower part of the face) plus '-y' (adjective suffix) plus '-est' (superlative). A simple descriptive compound that emerged naturally in English.
Jay Leno is probably the chinniest celebrity in history—his legendary chin became as famous as his late-night show! Facial features like this have actually influenced casting in entertainment for centuries.
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