as if as if /æz ɪf/

conjunction

1. () [Informal] (informal) indicates something is unlikely and should not be considered. Suggesting an improbable scenario.  ( like [Informal] , as if [Informal] , as though [Informal] )
   (informal) indicates something is unlikely and should not be considered. Suggesting an improbable scenario.
   

interjection

1. () [Informal] A sarcastic retort expressing skepticism or disbelief.  ( as if [Informal] )
   A sarcastic retort expressing skepticism or disbelief.