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on9

Vulgar
Used in Hong Kong
Pronunciation: "on-gau" ("on" in English, "9" in Cantonese)
Meaning: stupid, thinking stupid
More: on99

Chief Exceutive Mr.Tung: If China is good, Hong Kong will be good. When Hong Kong is good, we are good too.
Citizen A: He's on9.
Citizen B: He's on99.

by HKboy February 21, 2005

2458๐Ÿ‘ 151๐Ÿ‘Ž


on9

adj. Very stupid or foolish.
Pronounced "on gau" (The 9 is pronounced in Cantonese)

Cantonese slang used mainly by young Hong Kong Chinese. First originated on the Internet (isn't everything) but soon spread to everyday speech.

Originates from two words:
The first part "on" comes from "On ghuy" - a cantonese slang word meaning foolish.
The second part "9" comes from "gau" - a cantonese slang word meaning penis.

Also used as part of the phrase "on9 zai" meaning foolish man/boy.

Dude 1: Wow, that silly mainlander squatting on the pavement looks so damn on9.

Dude 2: Shut up, you on9 zai.

by The loch monster August 9, 2006

519๐Ÿ‘ 82๐Ÿ‘Ž


on9

stupid
chinese pronunciation

r u on9?

by urlifehk June 29, 2003

295๐Ÿ‘ 52๐Ÿ‘Ž


on9

on9 (ๆ†จ้ณฉ) is a Cantonese swear word which means foolish, stupid and brainless.
It is pronounced as 'on' + 'gau'. ('gau' is the Cantonese pronunciation of '9')
It is a friendly swear word to laugh, scold or discriminate other ppl.

on99 (ๆ†จ้ณฉ้ณฉ): very foolish
on9 zai (ๆ†จ้ณฉไป”): a foolish guy
on lun 7 9 (ๆ†จๆ’šๆŸ’้ณฉ): extremely stupid, mostly used to scold others when angry
on gui (ๆ†จๅฑ…): a less violent way to say on9

Person 1: The guy steps on a piece of shit and slips.
Person 2: HAHA, he is really on9.

by ccthz November 22, 2021


on9

Online,Connected to the Internet

I've been on9 since yesterday.

by Knight Industries Two Thousand November 22, 2003

233๐Ÿ‘ 323๐Ÿ‘Ž


on9

It is short term of online

Or
Feels very happy, short term as on cloud nine Or
Word for appreciation, which is upper than 1-9, and greater than them, for appreciating people who done very good advancement

When he on9s, he feel on9, and do a very on9 thing

by PolyMoster April 22, 2022

8๐Ÿ‘ 5๐Ÿ‘Ž


On9

A slang from Hong Kong which means extremely stupid and dumb

e.g. Ricegum is so on9 that everybody make fun of him

by Nejshhd July 8, 2021