Un·ex·pect·ed a. Not expected; coming without warning; sudden. -- Un*ex*pect*ed*ly, adv. -- Un*ex*pect*ed*ness, n.
adv 1: in a way that was not expected; "her brother showed up at
the wedding out of the blue" [syn: out of the blue]
2: without advance planning; "they met accidentally" [syn: by
chance, accidentally, circumstantially] [ant: intentionally]