unforeseen
/ˌʌnfɔɹˈsin/ noun C2- An event, incident, cost, etc. that was not foreseen.
Plural unforeseens
From the library
Nevertheless, I carefully preserved my ladder against one of those unforeseen opportunities of which I spoke just now, and which sudden chance frequently brings about.”
“What I mean to say is this, sir,—that during the last fortnight unforeseen circumstances have occurred——”
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