characterizer

Etymology tree
Ancient Greek χαράσσω (kharássō)
Proto-Indo-European *-tḗr
Ancient Greek -τήρ (-tḗr)
Ancient Greek χαρακτήρ (kharaktḗr)
Proto-Indo-European *-id-
Proto-Indo-European *-yéti
Proto-Indo-European *-idyéti
Proto-Hellenic *-íďďō
Ancient Greek -ίζω (-ízō)
Ancient Greek χᾰρακτηρίζω (khăraktērízō)der.
Medieval Latin charactērizōder.
English characterize
Proto-Indo-European *-yósder.
Proto-Italic *-āzijos
Latin -āriusnom.
Latin -āriusbor.
Proto-Germanic *-ārijaz
Proto-West Germanic *-ārī
Old English -ere
Middle English -ere
English -er
English characterizer
From characterize + -er.