蹭

cèng
verb HSK 7-9 #9,269

Meanings

  1. 1 to rub against
  2. 2 to scrape
  3. 3 to freeload
  4. 4 to mooch

Examples

HSK 3
Māo yìzhí zài wǒ tuǐ shàng cèng.
The cat kept rubbing against my leg.
HSK 3
Tā zǒngshì lái wǒ jiā cèng fàn.
He always comes to my house to mooch a meal.
HSK 6
Chēzi cèng le yíxià qiángbì.
The car scraped against the wall.

Tips

usage
蹭 has two common colloquial uses: physical rubbing/scraping and freeloading. 蹭饭 (mooch a meal), 蹭网 (use someone's Wi-Fi for free), and 蹭热度 (ride on something's popularity) are very common expressions.
register
蹭 in the freeloading sense is very colloquial and informal. It's common in everyday speech but rarely used in formal writing.

Components

radical
足 zú
foot (radical)
Left foot radical - the indexing radical. Anchors 蹭 in the movement family with 跑, 跳, 踢, 跨. Here it tags the original sense: dragging one's feet, scuffing them along the ground. Modern slang extends to 'mooching' - sneaking along on someone else's resources, scuffing into a meal or wifi connection without paying.
phonetic
曾 céng
once; ever
Right 曾 supplies the sound céng, an exact match with no drift. The 'once, formerly' sense plays no part in the meaning; pure sound peg. Same phonetic powers 增 to increase, 憎 to hate, 赠 to give, 缯 silk. Originally 曾 pictured a layered steamer, and many of its descendants share a faint 'stacking' flavour.

Stroke Order

蹭 cèng