unexpected

adj. not expected, unanticipated, unforeseen, surprising

Unexpected may refer to:"Unexpected" (Enterprise episode), the 4th episode of the television series Star Trek: EnterpriseUnexpected (Chaotic) an episode of the American Animated series, ChaoticUnexpected (Heroes), an episode of NBC's TV show Heroes (TV series)Unexpected (album), a 2004 album by SandyUnexpected (Lumidee album), an album by LumideeThe Unexpected, a continuation of Tales of the UnexpectedThe Unexpected (album), a studio album by Beautiful Sin
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Adjective
1. not expected or anticipated; "unexpected guests"; "unexpected news"
(antonym) expected
(similar) unannounced, unheralded, unpredicted
(see-also) surprising
2. not foreseen; "unsuspected difficulties arose"; "unsuspected turnings in the road"
(similar) unsuspected
3. made necessary by an unexpected situation or emergency; "a forced landing"
(synonym) forced
(similar) unscheduled
4. causing surprise or amazement by not being expected; "the curtains opened to reveal a completely unexpected scene"
(similar) surprising
5. not planned; "an unexpected pregnancy"
(similar) unplanned
6. happening or coming quickly and without warning; "a sudden unexpected development"
(synonym) unforeseen
(similar) sudden

(a.)
Not expected; coming without warning; sudden.
  

yi4 ming2 jing1 ren2
Amazing people with the first call.
Said of an obscure person who amazes the world with some spectacular achievement little expected by others. Startling the world. Set the world on fire. Coming as a bombshell.

yang1 ji2 chi2 yu2
Disaster spreads to the fish in the pond.
An unexpected disaster involving innocents.