- 正经事 zhèngjingshì serious businessserious affairs; important matters, such as those related to work or other productive activities
- 一本正经 yīběnzhèngjīng deadly serious(idiom) extremely serious and earnest; deadpan. Sometimes used to describe someone who is overly formal or acting with mock-seriousness.
- 假正经 jiǎzhèngjīng prudishpretending to be serious, decent, or upright; acting with hypocrisy or prudery
- 正正经经 zhèngzhengjīngjīng serious and formaldoing things in a serious, formal, or upright manner; in earnest; properly
- 正经八百 zhèngjingbābǎi dead seriousvery serious or earnest; formal and solemn; without the slightest trace of humor
- 不正经 bùzhèngjing indecentacting in a way that is improper, indecent, or immoral; often used to describe loose behavior or inappropriate speech
- 正经八摆 zhèngjīngbābǎi serious(regional) very serious; solemn; earnest
- 正经八板 zhèngjīngbābǎn serioussolemn and very serious; earnest
