Is this your crossword clue?
"change" is also used as a crossword clue. If that's what you saw, the answer is often alteration (10 letters).
Definitions
Make or become different
Used in a sentence
“The tadpole changed into a frog.”
“Stock prices are constantly changing.”
“The fairy changed the frog into a prince.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer2 curated clues
01“Become different”6 letters
02“Coins returned”6 letters
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