she sneered at her little sister's efforts to play the song on the piano.
Examples of sneer
sneer
The city seems to sneer at imperfect weather, never afraid to turn on the style.
From the au.news.yahoo.com
I've barely got past the first sentence and already I'm doing the default sneer.
From the nzherald.co.nz
Then you get a shot of the other coach, regarding the action with a jowly sneer.
From the time.com
In the ticktacktoe game, the set may sneer, flashing a sign-off YOU LOSE TURKEY.
From the time.com
It is customary for the writer to sneer that Hollywood has traduced their book.
From the telegraph.co.uk
This article was by Joanna Bolouri who can knock buildings over with one sneer.
From the hecklerspray.com
It does not sneer or giggle in the face of death, it invents prayers and weapons.
From the theatlantic.com
What should I do when I'm at a party and a fellow guest greets me with a sneer?
From the washingtonpost.com
Unlike the Bushies, the Obama folks bypass the press with a smile, not a sneer.
From the time.com
More examples
A facial expression of contempt or scorn; the upper lip curls
Express through a scornful smile; "she sneered her contempt"
A contemptuous or scornful remark
Smile contemptuously; "she sneered at her little sister's efforts to play the song on the piano"
(sneering) supercilious: expressive of contempt; "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"
(SNEERING) Jeering, flickering, laughing in scorn.