adjective
- slow to understand; stupid or obtuse
Usage: informal
Examples
- Don’t be so thickheaded – the instructions are clearly written.
- He gave me a thickheaded look when I explained the math problem.
- She called her brother thickheaded for forgetting his keys again.
- The thickheaded student couldn’t grasp the simple concept.
- I felt thickheaded after staying up all night studying.
- His thickheaded response showed he wasn’t paying attention.