unexpectedly
/ʌnɪkˈspɛktɪdli/ adverb B1- In an unexpected manner. · Near-synonyms: against expectations, against all odds, surprisingly
From the library
A BIRDCATCHER was about to sit down to a dinner of herbs when a friend unexpectedly came in.
He came to me quite unexpectedly after I had actually addressed this envelope with the intention of sending you the key to the cipher.
“We might be some good to her,” said Matthew suddenly and unexpectedly.
Here was an unexpectedly good chance to get this unwelcome orphan off her hands, and she did not even feel grateful for it.
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