sneer at
1． smile unpleasantly， curling the lip at sb．对（某人）冷笑
The fighter sneered at his opponent， trying to make him feel threatened．那拳击手朝他的对手冷笑，想镇住他。
2． express a low opinion of sb． or sth． in strong words轻视；嘲笑
Don't sneer at a child's efforts，however weak they may seem．孩子的努力无论多么不起眼，也不要轻视。
It's very discouraging to be sneered at all the time．成天受讥笑是很令人泄气的。