This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
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adj. Coming without warning; unforeseen.

adj. Not expected, anticipated or foreseen.

adj. Not expected; coming without warning; sudden.

Not expected; not looked for; unforeseen; sudden: often used substantively with the definite article: as, it is the unexpected that happens.

adj. not expected or anticipated

"So glad the writer resisted the term "unexpected drop". sartrecastic 12 April 2011 9:59AM"

unhoped    unprovided for    unthought    unthought-of    unpredicted    unhoped-for    out of the blue    upset    unheralded    unanticipated   

expected   

out of the blue    bolt from the blue   

sudden    unlooked-for    unforeseen   

affected    connected    corrected    defected    deflected    dejected    detected    directed    disaffected    disconnected   

sudden    extraordinary    incredible    considerable