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不三不四
不三不四
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不三不四

不三不四 — “Improper”

不三不四 is a Chinese idiom (chengyu) meaning “improper”. Disreputable; of questionable character or appearance; neither fish, flesh, nor fowl.

Frequency

不三不四 Pronunciation and Pinyin

  • 不bù
  • 三sān
  • 不bù
  • 四sì

不三不四 Character Breakdown

CharacterPinyinStrokesMeaning
不
bù4not
三
sān3the number three
不
bù4not
四
sì5the number four

Example Sentence with 不三不四

他总是和一些不三不四的人混在一起,让家人很担心。
He always hangs out with some disreputable people, which worries his family.

Origin and Story of 不三不四

The idiom "不三不四" (bù sān bù sì) originates from a story about Lu Zhishen, a heroic outlaw from Mount Liang. After saving a singing father and daughter by beating the tyrannical local bully Zheng Guanxi to death, Lu Zhishen was forced to shave his head and become a monk. He was assigned to manage a vegetable garden at Daxiangguo Temple.

This garden was often harassed by a group of disreputable and unruly ruffians. These "不三不四" individuals constantly tried to intimidate Lu Zhishen and force him to leave.

One day, they conspired to ambush him. However, Lu Zhishen, with his immense strength, single-handedly defeated them, throwing them all into a cesspit where they begged for mercy.

The term "不三不四" thus came to describe people who are disreputable, improper, or of questionable character.

Idioms Related to 不三不四

Synonyms of 不三不四

  • bù不lún伦bù不lèi类Neither fish nor fowl

Antonyms of 不三不四

  • yī一běn本zhèng正jīng经to be scrupulously proper, grave, and serious
  • táng堂táng堂zhèng正zhèng正Honorable, upright, and dignified
  • zhèng正jīn襟wēi危zuò坐sit up straight and formally

More idioms starting with 不

  • bù不yī一ér而zú足numerous and varied, impossible to list all
  • bù不shàng上bù不xià下stuck in an awkward position
  • bù不shàng上bù不luò落in an awkward or embarrassing situation
  • bù不shì世zhī之yè业unparalleled achievements
  • bù不shì世zhī之chóu仇unrivaled enmity
  • bù不shì世zhī之gōng功unparalleled achievement
  • bù不shì世zhī之lüè略unparalleled strategy
  • bù不sàng丧bǐ匕chàng鬯peace and order, rituals undisturbed
  • bù不fēng丰bù不jiǎn俭neither extravagant nor frugal
  • bù不fēng丰bù不shā杀neither extravagant nor frugal
  • bù不wèi为wǔ五dǒu斗mǐ米zhé折yāo腰Refuse to compromise integrity for meager gain
  • bù不wéi为yǐ已shèn甚not go too far

Questions about 不三不四

What does 不三不四 mean?
不三不四 (bù sān bù sì) is a Chinese idiom (chengyu) meaning “improper”.
How do you pronounce 不三不四?
不三不四 is pronounced bù sān bù sì in Mandarin Chinese.
Where does 不三不四 come from?
不三不四 comes from a classical Chinese story dating back to ancient China. The full story is on this page.
What is the Chinese definition of 不三不四?
指不正派,也指不象样子。
Copy the pinyin for 不三不四 →Choose tone marks or tone numbers and copy the complete four-character reading.Read Chinese vocabulary and idiom guides →Continue with words, phrases, and idioms explained through natural examples.

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