Pronunciation: ( jen'yOO-in),[key] —adj. 1. possessing the claimed or attributed character, quality, or origin; not counterfeit; authentic; real: genuine sympathy; a genuine antique. 2. properly so called: a genuine case of smallpox. 3. free from pretense, affectation, or hypocrisy; sincere: a genuine person. 4. descended from the original stock; pure in breed: a genuine Celtic people.