ruffle
Pronunciation: /ˈrʌf(ə)l/
verb
- 1disorder or disarrange (someone’s hair), typically by running one’s hands through it: he ruffled her hair affectionately
- (of a bird) erect (its feathers) in anger or display: they warbled incessantly, their throat feathers ruffled
- disturb the smoothness or tranquillity of: the evening breeze ruffled the surface of the pond in the yard
- disconcert or upset the composure of (someone): Lancaster had been ruffled by her questions
noun

Phrases
-
ruffle someone's feathers
- cause someone to become annoyed or upset: his sudden rise ruffled the feathers of the old guard tampering with the traditional approach would ruffle a few feathers
-
smooth someone's ruffled feathers
- make someone less angry or irritated by using soothing words: twenty minutes later, after a diplomatic phone call, she had succeeded in smoothing Henri’s ruffled feathers

Origin:
Middle English (as a verb): of unknown origin. Current noun senses date from the late 17th century