Etymology

controller

con·trol·ler
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Today it means: One who controls something. Full definition →

Middle English countreroller ← Anglo-Norman contreroulour ← Middle French contreroleur
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The story

  1. Medieval Latin · derived fromcontrārotulātor
  2. Middle French · derived fromcontreroleur
  3. Anglo-Norman · derived fromcontreroulour
  4. Middle English · inherited fromcountreroller
  5. English todaycontroller

From Middle English countreroller, from Anglo-Norman contreroulour and Middle French contreroleur (French contrôleur), from Medieval Latin contrārotulātor, from *contrārotulāre (from which control). Doublet of comptroller. By surface analysis, control + -er.

Etymology from Wiktionary, CC BY-SA 4.0.