faat3 hoi1 hau2 mung6發開口夢发开口梦
Jyutpingfaat3 hoi1 hau2 mung6
Yalefaat hōi háu muhng
Definition
To sleep-talk; to talk or make sounds unconsciously while dreaming.
colloquialdaily actions
How it's used
This expression literally refers to opening one's mouth to dream, capturing the involuntary nature of the act. It is used exclusively for talking during sleep and does not imply any deeper psychological meaning or prophetic ability. It is a common, lighthearted way to tease someone about their nocturnal habits.
Examples
You were sleep-talking last night and saying all sorts of weird things.
He sleep-talks all the time, you will be fine once you get used to it.
Related words
Common phrases
to talk while sleep-talking
Common mistake
Do not confuse this with 發夢, which simply means to dream. Using 發夢 to describe sleep-talking will lead to confusion, as it lacks the specific detail of vocalizing.
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.



