There’s no direct access to the auto correct dictionary used by the keyboard. There’s various indirect access (via things like UITextChecker and UIReferenceLibraryViewController) but nothing that’ll simply return you a list of words that you can use as input to your game.
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Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware
let myEmail = "eskimo" + "1" + "@apple.com"