yah yah /jɑː/

interjection

1. () [Informal, UK] 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.
   
2. () [Informal] An expression of derision, disgust, etc.  ( yah [Informal] )
   an expression of derision, disgust, etc.