Showing a lack of common sense

Bearing the characteristics of a simpleton, or someone who is uneducated

Suffering from mental confusion

Suffering from mental confusion

Suffering from mental confusion

Not having or showing an ability to absorb ideas readily

Characteristic of or resembling an oaf

Lacking sound judgment or resolve

Baffled, confused, mystified, at a loss, or uncertain

Silly and lacking sense or discretion

Dull in intellect

Stupid, obtuse or dumb

Being a dimwit

Not intelligent

In a state of shock or confusion

Eccentric

Worn-out and broken-down

Not smart

Like a dork

Having an irreversible loss of brain function and cessation of brain activity

Lacking intelligence, sense or understanding

Flustered

Acting or done without justification and with no concern for the consequences

Not having or showing an ability to absorb ideas readily

Lacking determination, emotional strength, or intellectual capacity

Having or involving a sensation of spinning around and losing one's balance

Annoyingly insensitive or slow to understand

Puzzled, confused, or bewildered

Suffering from mental confusion

Stupid or foolish

Suffering from mental confusion

Not having or showing an ability to absorb ideas readily

Suffering from mental confusion

Suffering from mental confusion

Being under the influence of a recreational drug

Confused and groggy

Not having or showing an ability to absorb ideas readily

Lacking intelligence or sense

Dazed

Stupid, slow, or insensitive

Used to convey that an activity or process has been engaged in to such a degree that someone is no longer capable of thinking or acting sensibly

Behaving in a foolish or childish way

Not predisposed to understand, think, or learn

Feeling sleepy

(of a person) Unable to think clearly

(of a person) Slow of understanding