朋比为奸是指两个或多个人联合起来做坏事，以达到共同的利益目的。这种行为往往是出于私利和不道德的考虑，违背了公平、公正和诚信的原则。朋比为奸一般用来形容人们之间勾结作恶的行为，也可以指两个或多个人互相勾结欺骗他人。

How to pronounce: [péng bǐ wéi jiān]

Usage:

1. 这些商人朋比为奸，欺骗顾客。

These businessmen colluded with each other to deceive customers.

2. 我们不能让那些政客朋比为奸，损害民众利益。

We cannot allow those politicians to collude and harm the interests of the people.

3. 他们之间的友谊只是建立在朋比为奸的基础上。

Their friendship is only based on collusion and deceit.

4. 她自己被朋友背叛了，原来他们一直在朋比为奸。

She realized that she had been betrayed by her friends, as they had been colluding all along.

5. 那些贪官污吏常常与商人朋比为奸，谋取私利。

Those corrupt officials often collude with businessmen to seek personal gain.

Synonyms and Usage:

1. 唇齿相依 (chún chǐ xiāng yī): literally means "lips and teeth depend on each other", used to describe a close and interdependent relationship between two parties.

2. 勾结 (gōu jié): to collude, to conspire, often used in a negative context.

3. 同流合污 (tóng liú hé wū): literally means "to flow together with filth", used to describe people who join together in immoral or illegal activities.

4. 狼狈为奸 (láng bèi wéi jiān): literally means "wolves helping each other", used to describe people who collude and commit evil deeds.

5. 互相勾结 (hù xiāng gōu jié): to collude with each other, often used in a negative context.

Editor's Summary:

朋比为奸是一种不道德的行为，常常出于私利和欺骗他人的目的。它违背了公平、公正和诚信的原则，因此应该被谴责和避免。与朋比为奸相关的同义词包括勾结、同流合污、狼狈为奸等，它们都指代人们之间勾结作恶的行为。作为一个网络词典编辑翻译人员，我们应该提倡正义和诚信，惕并制止任何朋比为奸的行为。