fai2痱
Jyutpingfai2
Yalefái
Definition
Prickly heat rash, or a mouth ulcer.
- prickly heat; heat rash
- canker sore; mouth ulcer
colloquialhealthbody
How it's used
Refers specifically to skin rashes caused by trapped sweat, commonly seen in humid weather. While it can technically refer to mouth ulcers in some contexts, it is most frequently used to describe heat rash on the body. It is often paired with the verb 生 to indicate the appearance of the rash.
Examples
The weather is so hot, I've got prickly heat all over my back.
Related words
Common mistake
Do not confuse this with 口瘡, which is the standard term for mouth ulcers. Using 痱 to refer to mouth ulcers is understood by some but is less precise and less common than using it for skin rashes.
Grammar color guide
Noun
Verb
Adjective
Adverb
Pronoun
Classifier
Particle
Connector
Grammar guides
- QuestionsFrom yes or no questions to asking who, what, where, and when. The patterns you need to ask questions naturally in Cantonese.
- ClassifiersCantonese puts a classifier between a number and a noun, and a bare classifier on its own can mean the. Learn the common ones and how to use them.
- ComparisonsHow to say bigger than, the most, the same as, and not as good as. Cantonese uses 過 where Mandarin uses 比, and that catches a lot of learners out.



