signer

The word 'signer' is a transparent English formation built upon the noun 'sign', which itself descends from Latin signum, meaning a mark, token, or signal. The Latin term is thought to originate from the Proto-Indo-European root sekw-, meaning "to follow" or "to point out," a concept that evolved into the idea of a distinguishing mark that points to a meaning. The agent suffix '-er', of Germanic origin, was appended to the verb form 'to sign' to create a noun denoting one who performs the act of signing. Thus, the literal logic of the morphemes—"one who marks"—directly and clearly leads to its modern meanings: a person who puts their signature on a document or a person who communicates using the marked gestures of sign language.

Structure: sign (to mark) + er (agent suffix) - sign: From Latin signum (mark, token, sign). Functions as the core root conveying the action of marking or indicating. - er: From Old English -ere, a Germanic agent noun suffix. Functions to denote a person who performs the action of the verb.