"sneer" in the noun sense
1. sneer, leer
a facial expression of contempt or scorn the upper lip curls
a contemptuous or scornful remark
"sneer" in the verb sense
express through a scornful smile
"she sneered her contempt"
"she sneered at her little sister's efforts to play the song on the piano"
Source: WordNet® (An amazing lexical database of English)
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