The origins of canoodle are obscure. Our best guess is that it may come from an English dialect noun of the same spelling meaning "donkey," "fool," or "foolish lover," which itself may be an alteration of the word noodle, meaning "a foolish person." That noodle, in turn, may come from noddle, a word for the head. The guess seems reasonable given that, since its appearance in the language around the mid-19th century, canoodle has been most often used jocularly for playful public displays of affection by couples who are head over heels in love.
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