thickheaded

adjective

thick·​head·​ed ˈthik-ˌhe-dəd 

1

: sluggish and obtuse of mind

2

: having a thick head

Synonyms

• airheaded
• birdbrained
• bonehead
• boneheaded
• brain-dead
• brainless
• bubbleheaded
• chuckleheaded
• dense
• dim
• dim-witted
• doltish
• dopey
• dopy
• dorky [slang]
• dull
• dumb
• dunderheaded
• empty-headed
• fatuous
• gormless [chiefly British]
• half-witted
• knuckleheaded
• lamebrain
• lamebrained
• lunkheaded
• mindless
• oafish
• obtuse
• opaque
• pinheaded
• senseless
• simple
• slow
• slow-witted
• soft
• softheaded
• stupid
• thick
• thick-witted
• unintelligent
• unsmart
• vacuous
• weak-minded
• witless

Examples of thickheaded in a Sentence

don't suppose that he's thickheaded just because he doesn't talk a lot

Word History

First Known Use

1691, in the meaning defined at sense 1

Kids Definition

thickheaded

adjective

thick·​head·​ed ˈthik-ˈhed-əd 

: stupid sense 1a