roil


Concise Oxford English Dictionary © 2008 Oxford University Press:
roil /rɔɪl/
verb
  • 1 make (a liquid) turbid by disturbing the sediment.

    ■ (of a liquid) move in a turbulent manner.

  • 2 US term for rile (sense 1).
– derivatives
roily adjective (N. Amer.).
– origin C16: perh. from OFr. ruiler ‘mix mortar’.
'roil' also found in these Oxford entries:

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