knucklehead

As nouns the difference between knucklehead and dolt

is that knucklehead is an idiot; a stupid or inept person while dolt is (pejorative) a stupid person; a blockhead or dullard.

As a verb dolt is

(obsolete) to behave foolishly.

As nouns the difference between dipstick and knucklehead

is that dipstick is a stick or rod used to measure the depth of a liquid often used to check the level at which a liquid in an opaque or inaccessible tank or reservoir stands; gauge while knucklehead is an idiot; a stupid or inept person.

As nouns the difference between knucklehead and numskull

is that knucklehead is an idiot; a stupid or inept person while numskull is (pejorative) a dunce, mentally dull or stupid person.

As nouns the difference between knucklehead and numbskull

is that knucklehead is an idiot; a stupid or inept person while numbskull is (pejorative).

As nouns the difference between knucklehead and pillock

is that knucklehead is an idiot; a stupid or inept person while pillock is a stupid or annoying person; simpleton; fool.

As nouns the difference between taxonomy and knucklehead

is that taxonomy is the science or the technique used to make a classification while knucklehead is an idiot; a stupid or inept person.

As a noun knucklehead

is an idiot; a stupid or inept person.

As an adjective knuckleheaded is

stupid or inept, like a knucklehead.