损友 (sǔnyǒu)bad friends;a friend who likes to kid around
Usage:

“损友”指对你的品行产生不良影响的人,也可以指喜欢胡闹搞怪的朋友,多出现在关系亲密的朋友当中。
“损友” refers to people whose behavior has a bad influence on your behavior. It also means a person who likes to kid around. Often it is used among close friends.

Setences:

1、Tā bèi sǔnyǒu dàishàngle qítú , rǎnshàngle xīdú de èxí.
他被损友带上了歧途,染上了吸毒的恶习。
He was led by a bad friend down an evil road, and is now addicted to drugs.

2、Měigèrén zǒngyǒu yīliǎnggè ài biǎndī nǐ de “sǔn yǒu”.
每个人总有一两个爱贬低你的“损友”。
Everyone has one or two “bad friends” who like to belittle you.

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