In an inattentive or careless manner: Of or pertaining to a lack of attention; not paying attention.

plural of inattention

Related to, or caused by inattention

Lack of attention, or failure to pay attention / An act of neglect; failure of courtesy.

Of or pertaining to a lack of attention; not paying attention; careless.

The property of being inattentive.

The phenomenon of not being able to perceive things that are in plain sight.

the phenomenon of not being able to hear things that are within earshot