adjective
- not restricted; without reservation; full; entire; unqualified: unreserved approval.
- free from reserve; frank; open: unreserved behavior.
- not kept or set apart for a particular use or person: unreserved seats.
adjective
- without reserve; having an open manner
- without reservation
- not booked or bookable
adv.1650s, from un- (1) “not” + reserved (see reserve) + -ly (2).