Four-letter word

Okay kiddo, so a four-letter word is a word that has only four letters in it. That means it is a short word that you can say or write quickly. But sometimes when people say "four-letter word," they don't just mean any four-letter word, they mean a word that is considered rude or mean. These words are often not used in polite company because they can hurt people's feelings or make them uncomfortable. So, it's important to remember to always use kind and respectful words, even if they are longer than four letters!