suru is a Japanese verb that means "to do" or "to make." It is commonly used in everyday conversation and can be combined with other words to create various meanings. For example, when paired with nouns, it forms phrases like suru koto (to do something) or benkyou suru (to study). In Japanese grammar, suru is an irregular verb, which means it does not follow the typical conjugation patterns of other verbs. It is essential for forming many expressions and is often used in both formal and informal contexts, making it a fundamental part of the Japanese language.