The Girl was writing notes for a history test on ancient Greece. For the section on the ancient Olympics, she started to write that they competed in the nude – or rather, “They were in the nude” – but as she was writing it, she changed her mind and wrote “naked”.
So, when I was quizzing her on the content, one of her dot-points was “They were in the naked”.
"In the naked" is a good phrase.
It sounds almost German.