gossiper

/ɡɒ'sɪpər/
a person given to gossiping and divulging personal information about others

noun [专属名词]爱闲聊的人;搬弄是非者(gossip 的名词形式)

The Gossiper can destroy relationships, and even compromise your job and reputation.
搬弄是非者会毁了人际关系,甚至危害到你的工作和声誉。

单词造句:
网友用“Gossiper”造句精选
She is a notorious gossiper here; who is very fond of dishing the dirt just around others. 她特别喜好说他人的闲话,是我们这出了名的长舌妇。
If you don't respond, the gossiper will move on - and you'll retain the trust and respect of your co-workers. 如果你没有任何反应,八卦者会离开—你也能够保留同事的信任与尊重。