ruffle someone's feathers, to

ruffle someone's feathers

Fig. to irritate or annoy someone. I didn't mean to ruffle his feathers. I just thought that I would remind him of what he promised us.
See also: feather, ruffle
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

ruffle someone's feathers

Annoy or offend someone, as in Calling him a tightwad really ruffled his feathers. This term alludes to the stiffened, upright feathers of an angry bird. [Mid-1800s]
See also: feather, ruffle
The American Heritage® Dictionary of Idioms by Christine Ammer.

ruffle feathers

COMMON If someone ruffles feathers, they say or do something which upsets or annoys people. His management style ruffled a few feathers. The tall Texan ruffled some English feathers with his remarks. Note: If a bird's feathers are ruffled they stand out from its body, for example because it is frightened or angry.
See also: feather, ruffle
Collins COBUILD Idioms Dictionary, 3rd ed.

ruffle someone's feathers

cause someone to become annoyed or upset.
See also: feather, ruffle
Farlex Partner Idioms Dictionary

ruffle someone's feathers, to

To irritate someone. The transfer of stiffened, upright feathers from angry birds to human beings took place around 1800. “The Dean ruffled his plumage and said, with some asperity . . . ,” wrote Frederic W. Farrar (Julian Home, 1859).
See also: ruffle
The Dictionary of Clichés by Christine Ammer
See also:
  • ruffle
  • ruffle (one's) feathers
  • ruffle feathers
  • ruffle its feathers
  • ruffle someone's feathers
  • drive (someone) up the wall, to
  • get someone's goat, to
  • drive (someone) buggy
  • pester (one) about (someone or something)
  • pester about