英解：to behave irrationally or erratically; lose control
It's OK to gamble a little, but never lose your head in a casino!
He's thinking of marrying his girlfriend already! Has he lost his head?
If you complain to the boss, be tactful. Don't lose your head.
The baseball team lost the game because the pitcher lost his head
and played badly.
My cousin lost her head while shopping and bought lots of unnecessary