Meaning Of Celtic origin, meaning 'first', and is variant of Kady. Origin of Kaydee Celtic , Irish Popular Middle Names Maelynn, Nyamekye, Ann, Lorraine Pronunciation 🔊 Listen Kaydee KAY-dee Similar Names Ailis Arieen Keandra Arte Arleigh Berget Tyro Annamary Kadi Bedelia Year by Year Popularity of Kaydee