11 year old vocabularly building

While we were eating dinner on St. Patrick's day, Jon was commenting about how he ran into some people coming from the St. Pat's day parade.  He mentioned that although the calendar said mid-March, the weather was more like January, and people were definitely not dressed for our current temperatures.  He went so far as to suggest some of them might even have been dressed in a 'lewd' manner.  Theo asked what lewd meant, but before we could answer (and how would we have answered?) he said, "Wait, does it mean ludicrously nude?"  Yes, Theo, it does.  And I'm sure in his mind, lewd is spelled lude, which makes his definition even better.