non

`Non` is usually a prefix that means "not" or "without." It is added to many nouns and adjectives to show that something does not belong to a group, does not have a quality, or does not do a certain thing. Think of `non-fiction`, which is writing based on facts, or a `non-smoker`, who does not smoke. You also see it in words like `non-stop`, `non-essential`, and `nonverbal`. It is a simple way to give a word a negative meaning.

`Non` is most often used in English as a prefix meaning "not" or "without." It is added to nouns and adjectives to form words that describe something outside a group, missing a quality, or not doing a certain action. A `non-smoker` is a person who does not smoke. `Non-fiction` is writing that is not fictional. A `non-essential` item is not necessary.

This prefix is very common in everyday English, formal writing, and technical language. You may see it in words like `nonverbal`, `nonresident`, `nonhuman`, `nonviolent`, and `nonrenewable`. In each case, the prefix changes the base word by denying it or marking it as outside the usual category. It often signals absence, exclusion, or exception rather than a complete opposite.

Spelling can vary. Some forms are written with a hyphen, especially when that makes the word easier to read, as in `non-stop` or `non-native`. Other forms are often written as one word, such as `nonfiction` or `nonresident`. In short, `non` is a small but very useful prefix that helps English clearly express "not," "without," or "outside a certain kind."