absent-minded
adjective
Meaning
Frequently forgetful or preoccupied with one's own thoughts to the point of being unaware of immediate surroundings.
Examples
- The absent-minded professor often arrived at his lecture hall wearing two different shoes.
- She is so absent-minded that she once left her car keys in the freezer.
Synonyms: forgetful, distracted, scatterbrained, preoccupied