adj
1. casually thoughtless or inconsiderate
e.g. an offhand manner
she treated most men with offhand contempt
Synonym: offhanded
2. with little or no preparation or forethought
e.g. 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
Synonym: ad-libextemporaneousextemporaryextemporeimpromptuoffhandedoff-the-cuffunrehearsed
adv
1. in a casually inconsiderate manner
e.g. replied offhand, his mind a million miles away
she threw him over offhandedly without even a Dear-John letter
Synonym: offhandedoffhandedly
2. without previous thought or preparation
e.g. couldn't give the figures offhand
we decided offhand to go to Canada
she had made these remarks offhandedly
Synonym: offhandedoffhandedly