lose (one's) head

lose (one's) head

To lose one's composure and act emotionally or irrationally. You need to calm down before you talk to Larry. You don't want to lose your head before finding out his side of the story. I'm sorry, I lost my head out there. There's no excuse for what I said.
See also: head, lose
Farlex Dictionary of Idioms.

lose one's head (over someone or something)

Fig. to become confused or overly emotional about someone or something. Don't lose your head over John. He isn't worth it. I'm sorry. I got upset and lost my head.
See also: head, lose
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

lose one's head

see under keep one's head, def. 1.
See also: head, lose
The American Heritage® Dictionary of Idioms by Christine Ammer.

lose your head

COMMON If you lose your head, you panic and do not remain calm in a difficult situation. He warned the party not to lose its head, saying that it was not a `time for panic'. When he was questioned by the police, he completely lost his head, told a number of lies and forgot to mention one or two things that might have helped him. Compare with keep your head.
See also: head, lose
Collins COBUILD Idioms Dictionary, 3rd ed.

lose your ˈhead

(informal) become unable to act in a calm or sensible way: It’s a very frightening situation, but we mustn’t lose our heads. OPPOSITE: keep a level head
See also: head, lose
Farlex Partner Idioms Dictionary
See also:
  • lose head
  • lose one's head
  • lose your head
  • lose (one's) head over (something)
  • lose it
  • lose it, to
  • lose one's shirt, to
  • lose
  • lose ground to (someone or something)
  • lose ground