Unforeseen
/ˌʌn.fɔːrˈsiːn/
Synonyms
- improbable
- surprising
- unexpected
- unanticipated
- unpredicted
Slang Meanings
Out of the blue
The news came out of the blue; I wasn't expecting it at all.
Curveball
Life threw me a curveball when I lost my job unexpectedly.