Some of the most ordinary words in English have origins that no one can explain. Among them: "dog", "big", "bird", "donkey", "boy", "girl" and "puzzle". In this episode, let's trace their earliest appearances, explore the theories behind them, and unravel why these everyday words became some of our language's greatest mysteries. The English words nobody can explain | 23:24 RobWords | 887K subscribers | 478,352 views | December 6, 2025 YouTube transcript (below) reformatted at textformatter.ai