1. with little or no preparation or forethought;

"his ad-lib comments showed poor judgment"

"an extemporaneous piano recital"

"an extemporary lecture"

"an extempore skit"

"an impromptu speech"

"offhand excuses"

"trying to sound offhanded and reassuring"

"an off-the-cuff toast"

"a few unrehearsed comments"

2. casually thoughtless or inconsiderate;

"an offhand manner"

"she treated most men with offhand contempt"

1. without previous thought or preparation;

"couldn't give the figures offhand"

"we decided offhand to go to Canada"

"she had made these remarks offhandedly"

2. in a casually inconsiderate manner;

"replied offhand, his mind a million miles away"

"she threw him over offhandedly without even a Dear-John letter"