Throw a mud at:
向某人扔泥巴 X
诋毁 造谣 √
例句：
All he's trying to do is to throw mud at my name.
他所做的事就是诋毁我的声誉。
Throw away:
扔掉；浪费，错过（机会）
① That old chair should be thrown away.
那把旧椅子应该扔掉了。
② We should have won. We threw it away.
我们本该赢的，是我们自己没把握住机会。
