turn someone's head

Verb

turn someone's head (third-person singular simple present turns someone's head, present participle turning someone's head, simple past and past participle turned someone's head)

1. (idiomatic) To influence someone in a manner that significantly changes his or her behavior.
   • [I]t was plain that power had turned his head, and he would not be satisfied till all the power and all the wealth rested in his own hands. So he became swollen with pride, forgot it was I that had placed him there, and made preparations to destroy me.1901, Jack London, A Hyperborean Brew
   • I should not want him to make a fortune—let that come later. It could turn his head, at his time of life, and in many ways be a damage to him.1906, Mark Twain, chapter 1, in Chapters from My Autobiography

   Synonyms:

   go to someone's head

2. (idiomatic) To attract someone's romantic interest.
   • Young men at Hillsborough—many of whom, I felt sure, had a smarter look than I—had bid stubbornly for her favour. I wondered, often, it did not turn her head—this tribute of rustic admiration.1900, Irving Bacheller, chapter 20, in Eben Holden: A Tale of the North Country
   • I often marvel that the women did not turn his head.1904, Harold MacGrath, chapter 2, in The Man On The Box

   Synonyms:

   light someone's fire