Reserved :: Reserved (a.) Kept for future or special use, or for an exigency; as, reserved troops; a reserved seat in a theater..
Reserved :: Reserved (a.) Restrained from freedom in words or actions; backward, or cautious, in communicating one's thoughts and feelings; not free or frank..
Unreserved :: Unreserved (a.) Not reserved; not kept back; not withheld in part; unrestrained.