A signature is a unique MARK or WRITING made by an individual to signify their identity and/or approval of a document. The crossword solutions for the term signature include IMPRINT (7 letters), INSCRIPTION (11 letters), WRITING (7 letters), HANDWRITING (11 letters), authorization (13 letters), IMPRESSION (10 letters), MARK (4 letters), STAMP (5 letters), SIGN (4 letters), SEAL (4 letters), ENDORSEMENT (11 letters), AUTOGRAPH (9 letters), NAME (4 letters), and johnhenry (9 letters). IMPRINT, INSCRIPTION, WRITING, and HANDWRITING refer to the physical act of signing a document, while authorization, IMPRESSION, MARK, STAMP, SIGN, SEAL, ENDORSEMENT, AUTOGRAPH, NAME, and johnhenry all refer to the signature itself.