Discover the nuance between "Yep" and " Yup " in our comprehensive guide. Understanding “Yep” vs. “ Yup ” - Difference Explained (With Examples) enriches your conversation skills. Yup is an adverb that means yes, often used in informal spoken language. Learn how to pronounce yup , see examples of its usage, and find translations in other languages. Definition of yup exclamation in Oxford Advanced Learner's Dictionary. Meaning , pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Yup is an informal word for yes, an affirmative reply. It is a slang term that can be used as an adverb or a noun, and it is often used in texting or online communication.