نمی is a Persian word that translates to "no" or "not" in English. It is commonly used in the Persian language to negate verbs, adjectives, or entire sentences. For example, in the phrase "من نمی‌دانم" (man nemidānam), it means "I do not know." In Persian grammar, نمی is an essential part of forming negative sentences. It is often combined with the verb to indicate the absence of an action or state. Understanding how to use نمی correctly is crucial for effective communication in Persian and helps convey clear meanings in conversations.