puzzleheaded

As an adjective puzzleheaded

is having the head full of confused notions.

As a noun puzzleheadedness is

the quality of being puzzleheaded; foolish confusion.

As a noun notion

is mental]] apprehension of whatever may be known, [[think|thought, or imagined; idea, concept.

As an adjective puzzleheaded is

having the head full of confused notions.

As adjectives the difference between confused and puzzleheaded

is that confused is (lb) unable to think clearly or understand while puzzleheaded is having the head full of confused notions.

As a verb confused

is (confuse).

As a proper noun head

is , from residence near a hilltop or the head of a river, or a byname for someone with an odd-looking head.

As an adjective puzzleheaded is

having the head full of confused notions.