unfocused
Definitions
Lacking a clear or definite focus; not concentrated.
Not having a sharp or clear image; blurred.
Lacking a clear sense of purpose or direction.
Examples
The student felt unfocused during the long lecture and struggled to take notes.
Her unfocused gaze suggested that she was lost in deep thought rather than paying attention to the meeting.
Synonyms
distracted scatterbrained aimless disorganized vague inattentive muddled
Antonyms
focused concentrated attentive determined precise sharp purposeful