sneering

(verb) express through a scornful smile. Synonyms: sneer. Example: "She sneered her contempt."

(verb) smile contemptuously. Synonyms: sneer. Example: "She sneered at her little sister's efforts to play the song on the piano."

(adj) expressive of contempt. Synonyms: supercilious, snide. Examples: "Curled his lip in a supercilious smile." "Spoke in a sneering jeering manner." "Makes many a sharp comparison but never a mean or snide one."