be all brawn and no brain(s)

be all brawn and no brain(s)

To have great power or physical strength but lack mental acuity or intelligence. He may have been a good football player in high school, but he was all brawn and no brains, so he didn't get into any colleges.
See also: all, and, brawn, no
Farlex Dictionary of Idioms.
See also:
  • all brawn and no brain
  • brawn
  • brains and brawn
  • brains and/versus brawn
  • versus
  • VS
  • brains versus brawn
  • jog the/(someone's) mind
  • (not) half the person/man/woman (one) used to be
  • go mental