The meaning of NO is not. How to use no in a sentence. NO definition: 1. Not any; not one; not a: 2. Used in signs and on notices to show that something is not allowed . No definition: (a negative used to express dissent, denial, or refusal, as in response to a question or request).. See examples of NO used in a sentence. As an adverb, adjective, and noun , ” no ” conveys the meaning of ‘not any.’ This usage can refer to the complete absence of something, whether it’s quantifiable items, presence, or attributes. For example, “No sugar,” “No one is here,” or “There are no tickets left.”. Not any, not a, or not one: there’s no money left; no card in the file. Not by a long way; not at all: she’s no youngster. (followed by comparative adjectives and adverbs) not: no fewer than forty men; no more quickly than before. You use no to mean not any or not one person or thing. He had no intention of paying the cash. No job has more influence on the future of the world. No letters survive from this early period. 2 days ago · No is the ultimate negative: it means “not any,” or “not at all,” and it’s also used to express a generally negative response. If there’s no milk for your cereal in the morning, there’s not a drop left. What does NO mean? This dictionary definitions page includes all the possible meanings, example usage and translations of the word NO.