'แน่นอน (nâe-non)' is a common Thai phrase used to express certainty or strong affirmation, similar to 'certainly' or 'of course' in English. It often appears at the beginning or end of a sentence, affirming the statement being made. It serves as a useful term for giving definite responses, making assurances, or emphasizing a fact. It is also frequently used in questions to solicit an affirmative response.