disturber

Meanings

1. 1
   noun

   a person or thing that interrupts peace, order, concentration, or normal activity

   The persistent alarm was the chief disturber of the neighborhood's sleep.

From Middle English disturber, an agent noun formed from disturben, 'to disturb,' + -er. Disturb came through Old French destourber from Latin disturbare, built from dis- ('apart') + turbare ('throw into disorder'), from turba, 'crowd or turmoil.'

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