go soft in the head

go soft in the head

To become dumb, foolish, or witless. You sold the car and bought a scooter? Have you gone soft in the head? Tommy's a good kid, but I think he's gone a little soft in the head.
See also: go, head, soft
Farlex Dictionary of Idioms.

be/go soft in the ˈhead

(informal, disapproving) be/become crazy or stupid: Sometimes I talk to myself in the street; people must think I’m soft in the head.
See also: go, head, soft
Farlex Partner Idioms Dictionary
See also:
  • where
  • be gone on
  • bit-bucket
  • gone
  • gone on (one)
  • here today and gone tomorrow
  • here today, (and) gone tomorrow
  • here today, gone tomorrow
  • be gone up
  • to hell and gone