sneering sneering /ˈsnɪrɪŋ/

adjective

1. Expressive of contempt  ( sneering , snide , supercilious )
   expressive of contempt
    Curled his lip in a supercilious smile
   curled his lip in a supercilious smile
    Spoke in a sneering jeering manner
   spoke in a sneering jeering manner
    Makes many a sharp comparison but never a mean or snide one
   makes many a sharp comparison but never a mean or snide one