shitheaded

As a noun terms

is .

As an adjective shitheaded is

(vulgar) foolish, incompetent.

Shitheadedness is a derived term of shitheaded.

In vulgar|lang=en terms the difference between shitheadedness and shitheaded

is that shitheadedness is (vulgar) quality of being shitheaded; foolishness; incompetence while shitheaded is (vulgar) foolish, incompetent.

As a noun shitheadedness

is (vulgar) quality of being shitheaded; foolishness; incompetence.

As an adjective shitheaded is

(vulgar) foolish, incompetent.

As adjectives the difference between incompetent and shitheaded

is that incompetent is incompetent while shitheaded is (vulgar) foolish, incompetent.

As adjectives the difference between foolish and shitheaded

is that foolish is lacking good sense or judgement; unwise while shitheaded is foolish, incompetent.