inattentive

This term describes a state of mental absence or a failure of focus. It often carries a negative connotation of negligence or lack of discipline, suggesting that the person is distracted or indifferent rather than simply unable to concentrate. It is frequently used in academic or professional settings to describe a lapse in performance.

When applied to interpersonal relationships, the word shifts from a lack of focus to a lack of empathy or care. In this sense, it implies a failure to notice the emotional or physical needs of another person, often bordering on callousness or systemic neglect.