IPA: //ˈklæsər//
KK: /ˈklæsər/
A person who sorts or organizes things into groups based on shared characteristics.
The classer organized the books by genre in the library.
Classer is derived from the French verb 'classer' (meaning to classify or arrange into classes). The word originates from 'classe' (meaning class), which comes from the Latin 'classis' (meaning a division or group). The suffix '-er' indicates a person who performs the action. Thus, 'classer' refers to a person who classifies or arranges items into categories.
Think of someone who 'arranges' ('classer') things into 'groups' ('classe') — that's what a classer does.