unruffle

[uhn-ruhf-uh l]
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verb (used without object), un·ruf·fled, un·ruf·fling.
  1. to become calm or smoothed out.

Origin of unruffle

First recorded in 1690–1700; un-2 + ruffle1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018