disparager 

英汉解释

n. 毁谤者

同义词

n. depreciator，detractor，knocker

参考例句

1. For the honor of La Francaise Duroy was forced to challenge his disparager to a duel.
为了《法兰西生活》的荣誉，杜洛瓦不得不向诋毁他的人提出决斗。
2. For the honor of La Vie Francaise Duroy was forced to challenge his disparager to a duel.
为了《法兰西生活》的荣誉，杜洛瓦不得不向诋毁他的人提出决斗。
3. A disparager would say that anybody can be a blogger, and anything can be a blog: is this not proof of low standards?
有诋毁者称，随便哪个张三李四，甚至阿猫阿狗都能搞个博客，这不正证明了博客媒体的低标准么？

英英解释

n.
  1. one who disparages or belittles the worth of something

网络释义

disparager
毁谤者;
disparager famacide
毁谤者;