yup yup /jʌp/

interjection

1. () [Informal] Affirmative answers or indications of agreement.  ( ay [Dialect] , aye [Dialect] , ya [Informal, South Africa] , certainly , sure [Informal] , yea [Informal] , yeah [Informal] , yes , uh-huh [Informal] , yah [Informal, UK] , yep [Informal] , yup [Informal] )
   Affirmative answers or indications of agreement.