The answer to the crossword question “Be overly sweet is CLOY” is the word “cloy.” In this context, “cloy” means to be excessively sweet or sickeningly sweet. When something is cloying, it can be overwhelming to the point of being unpleasant or too much of a good thing. This word is often used to describe foods that are too sweet or drinks that are too sugary. It can also be used to describe a person’s behavior if it is overly sentimental or syrupy. In other words, if someone is being too sweet or trying too hard to please others, they may be considered cloying.