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"perfectly" is also used as a crossword clue. If that's what you saw, the answer is often ideally (7 letters).
Definitions
completely and without qualification; used informally as intensifiers
Word origin
From perfect + -ly.
Used in a sentence
“They completed the first series perfectly.”
“Their performance was perfectly fine.”
“The Gentiles would not perfectly relinquish all their Idols; so, they were persuaded to turne the Image of Jupiter with his thunderbolt to Christus crucifixus, and Venus and Cupid to the Madonna and her Babe.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Without flaw”9 letters
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