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"kidding" is also used as a crossword clue. If that's what you saw, the answer is often joking (6 letters).
Definitions
Joking or teasing.
Used in a sentence
“Attended kiddings allow owners to remove the kids from their dams prior to suckling and ingestion of colostrum.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Not serious”7 letters
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