How to Say "Toilet" in Cantonese

廁所

ci3 so2

The Cantonese word for toilet is 廁所 (ci3 so2).

廁所 is the most common way to refer to a toilet or restroom in daily conversation. To say 'to go to the toilet', use the verb phrase 去廁所.

Meaning: fixture used for urination and defecation (noun)

What does it mean word for word?

廁所 is composed of 廁, meaning toilet and 所, meaning place.

For a more polite and formal way to refer to a restroom, use 洗手間, which literally means 'washing hands room'.

ci3 so2

While 廁所 refers to the room itself, if you are specifically looking for the toilet bowl in a house, you might refer to it as 馬桶, which literally means 'horse bucket'.
The word 所 in 廁所 means 'place', but it is also used in many other Cantonese words for official institutions, such as 派出所 for a police station.
When speaking to children, adults might avoid using 廁所 and instead use more playful or euphemistic terms to avoid being impolite.

廁所喺邊呀？
Where is the toilet?
This sentence is useful for asking for the location of the 廁所.
Tatoeba #386747 by nickyeow, translation #38937 by CK
廁所喺邊啊？
Where's the toilet?
Tatoeba #12117119 by thesilhouette, translation #38938 by CK
我幾分鐘之前見到佢走咗入個廁所度。
I saw him go into the toilet a few minutes ago.
This sentence is useful for describing someone entering a 廁所.
Tatoeba #759718 by nickyeow, translation #72987 by CK
救命啊！我好急，請問洗手間喺邊度呀？
Help! I'm in urgent need. Could you please tell me where the toilet is?
2 more sentences on Tatoeba

Meiling and Zikian are at a shopping mall.

美玲 Mei Ling

我想去廁所，你知唔知喺邊？
ngo5 soeng2 heoi3 ci3 so2, nei5 zi1 m4 zi1 hai2 bin1?
I want to go to the toilet, do you know where it is?
子健 Tsz Kin

喺嗰邊，行過去就見到。
hai2 go2 bin1, haang4 gwo3 heoi3 zau6 gin3 dou2.
It's over there, you'll see it if you walk over.
美玲 Mei Ling

唔該，我快啲去廁所洗個手。
m4 goi1, ngo5 faai3 di1 heoi3 ci3 so2 sai2 go3 sau2.
Thanks, I'll quickly go to the toilet to wash my hands.
子健 Tsz Kin

好嘅，我喺度等你。
hou2 ge3, ngo5 hai2 dou3 dang2 nei5.
Okay, I'll wait for you here.

Sources

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