roil Hear it!

roil definition

roil (ro̵il)

transitive verb

  1. to make (a liquid) cloudy, muddy, or unsettled by stirring up the sediment
  2. to stir up; agitate
  3. to make angry or irritable; rile

Etymology: Fr rouiller < OFr rouil, roille, rust, mud, ult. < L robigo, rust, akin to ruber, red

intransitive verb

to be agitated

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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