The crossword solution for the term 'PUT YOUR FOOT IN IT' is SHOE, which is a four-letter word. The phrase 'put your foot in it' is an idiom that means to make a mistake or say something inappropriate. It is often used when someone has said something that they shouldn't have and they are embarrassed by their mistake. The phrase is usually accompanied by the image of someone putting their foot in their mouth, which is why the crossword solution is SHOE.