thick-skulled

thick-skulled

Stupid, dimwitted, or obtuse. I was pretty thick-skulled going through high school, but when I started college—I decided to start taking my studies more seriously. Jen's new girlfriend is very nice, but she's pretty thick-skulled.
Farlex Dictionary of Idioms.
See also:
  • skulled
  • be (as) thick as two short planks
  • be (as) thick as a brick
  • be (as) thick as a short plank
  • (as) thick as a brick
  • thick as two short planks
References in periodicals archive
When I went to quiz the Pulp singer about her, a thick-skulled minder shoved me away.