scatterbrained
adjectiveUK /ˈskætəbreɪnd/
US /ˈskætərbreɪnd/
A scatterbrained person forgets things and finds it hard to pay attention.
My scatterbrained brother left his keys in the fridge again.
OTHER MEANINGS
2. Unable to think clearly or in an orderly way.
After the long trip, she felt too scatterbrained to do any work.
3. Acting in a silly or random way without a plan.
His scatterbrained ideas made the meeting fun but confusing.
4. Easily losing track of what one is doing.
The scatterbrained student kept losing her place in the book.