私自

sīzì

private; personal

HSK 7

漢字分解

Meaning and Usage

The adverb 私自 (sī zì) is used to describe actions taken privately or without authorization, often implying a breach of rules or protocol. It carries a negative connotation, suggesting that the person acted on their own initiative without permission.

Common Contexts

It is frequently used in formal or workplace settings where unauthorized decisions or actions can cause problems, such as modifying documents, entering restricted areas, or making decisions without team consensus.

Collocations and Patterns

  • 私自修改 (sī zì xiū gǎi): to alter something without permission
  • 私自 (sī zì jìn rù): to enter somewhere without authorization
  • 私自决定 (sī zì jué dìng): to decide on one's own without consulting others

These collocations emphasize the unauthorized and secretive nature of the action.

Usage Notes

When using 私自, the speaker usually implies disapproval or criticism. It is not used for neutral or positive private actions but specifically for those done without consent or against rules. Avoid confusing 私自 with simply 'private' in a neutral sense; it always suggests a lack of permission.

例文

他私自修改了公司的文件,结果被发现了。

Tā sī zì xiū gǎi le gōng sī de wén jiàn, jié guǒ bèi fā xiàn le.

He altered the company's documents without permission and was caught.

请不要私自进入实验室,必须有老师陪同。

Qǐng bú yào sī zì jìn rù shí yàn shì, bì xū yǒu lǎo shī péi tóng.

Please do not enter the laboratory on your own; a teacher must accompany

他私自决定了项目的方向,没有征求团队的意见。

Tā sī zì jué dìng le xiàng mù de fāng xiàng, méi yǒu zhēng qiú tuán duì

He decided the direction of the project on his own without consulting the