absentminded

he's incredibly absentminded and often forgets where he put his keys.

my absentminded professor misplaced his research papers again.

she has an absentminded way of staring into space while she works.

due to his absentmindedness, he missed the important meeting.

the absentminded student left his lunch on the bus.

she's naturally absentminded, but tries to make notes to compensate.

he's an absentminded driver and needs to pay more attention.

an absentminded glance revealed a hint of sadness in her eyes.

being absentminded can lead to costly mistakes at work.

despite being absentminded, he's a brilliant thinker.

her absentmindedness is a charming quirk, everyone says.