Crenelates is a word that describes the act of adding notches or battlements to a structure. However, it's not a commonly used word in everyday conversations, which makes it difficult for people to understand its meaning. Fortunately, there are many synonyms for crenelates that convey the same idea. These include embattlements, notches, battlements, indents, serrations, and teeth. All of these words describe the same action of adding protective structures to a building or fortification, but they are more commonly used and easier to understand than the word crenelates. It's important to use words that are easily understood to avoid confusion and ensure clear communication.