+**Yeah** is an [informal](/wiki/Informal_Speech) English word, primarily used as an [affirmation](/wiki/Affirmation) or to express agreement. It serves as a common, relaxed variant of "yes," conveying sentiments from casual acknowledgement to enthusiastic consent.
+## See also
+- [Yes](/wiki/Yes)
+- [No](/wiki/No)
+- [Interjection](/wiki/Interjection)
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