Knuckleheaded Definition
    adjective
  
 Stupid or inept, like a knucklehead.
Wiktionary 
Origin of Knuckleheaded
-  
knucklehead + -ed
From Wiktionary
 
Find Similar Words
Find similar words to knuckleheaded using the buttons below.
Stupid or inept, like a knucklehead.
knucklehead + -ed
From Wiktionary
Find similar words to knuckleheaded using the buttons below.