in a casually inconsiderate manner; "replied offhand, his mind a million miles away"; "she threw him over offhandedly without even a Dear-John letter"
casually thoughtless or inconsiderate; "an offhand manner"; "she treated most men with offhand contempt"
without previous thought or preparation; "couldn't give the figures offhand"; "we decided offhand to go to Canada"; "she had made these remarks offhandedly"
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"
set aside for the use of a particular person or party
give or assign a resource to a particular person or cause; "I will earmark this money for your research"; "She sets aside time for meditation every day"
obtain or arrange (for oneself) in advance; "We managed to reserve a table at Maxim's"
hold back or set aside, especially for future use or contingency; "they held back their applause in anticipation"
arrange for and reserve (something for someone else) in advance; "reserve me a seat on a flight"; "The agent booked tickets to the show for the whole family"; "please hold a table at Maxim's"
marked by self-restraint and reticence; "was habitually reserved in speech, withholding her opinion"-Victoria Sackville-West