signet

The word "signet" entered English in the late 14th century from Old French signet, itself a diminutive of signe (meaning sign or mark). The Old French term derives from Latin signum, which carried the core meanings of a mark, seal, sign, or signal. The Latin signum is traced further back to the Proto-Indo-European root sekw-, meaning "to point out" or "to show." The literal logic of "signet" is thus "a small sign," specifically evolving to denote a small personal seal, often set in a ring, which served as the definitive mark or signature of its owner to authenticate documents.

Structure: sign (mark) + et (diminutive suffix) The morpheme "sign" originates from Latin signum, meaning a mark, token, or indication. The morpheme "-et" is a diminutive suffix of Old French origin, used to indicate a small version of something.