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"unexpectedly" is also used as a crossword clue. If that's what you saw, the answer is often surprisingly (12 letters).
Definitions
without advance planning
Word origin
From unexpected + -ly or un- + expectedly.
Used in a sentence
“Near-synonyms: against expectations, against all odds, surprisingly”
“[…] she was startled by unexpectedly meeting her husband, who was coming to seek her.”
“Other evidence of former ownerships such as notice-boards, number plates, and makers' plates, are often discovered unexpectedly.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Out of nowhere”12 letters
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