1. not noticing or paying attention to things around one

Examples

• The inobservant driver missed the stop sign completely.
• She was so inobservant that she walked right past her friend.
• His inobservant nature made him a poor witness to the accident.
• The inobservant student failed to notice the teacher’s warning glances.
• Being inobservant of social cues, he continued talking despite their discomfort.
• The inobservant hiker missed several trail markers and got lost.