The suffix “-ler” typically forms agent nouns, indicating a person or thing that performs a specific action. Examples include “angler” (one who angles), “controller” (one who controls), and “dealer” (one who deals). These nouns often derive from verbs, transforming the action into a designation for the actor.
This morphological process plays a significant role in English vocabulary expansion. Creating agent nouns allows for concise and nuanced expression, contributing to the richness and flexibility of the language. Historically, many such words entered English from other languages, especially French and Latin, reflecting cultural and linguistic exchange. Understanding the function and origin of these formations provides valuable insights into etymology and semantic relationships within English.