sei2 ceon2死蠢
Jyutpingsei2 ceon2
Yaleséi chéun
Definition
Extremely stupid, or a stupid person.
slangpeopleslang
How it's used
Carries a much stronger and more aggressive tone than simply calling someone 蠢. It is often used as a direct insult to highlight someone's lack of common sense or poor decision-making in a specific moment. While it functions as an adjective, it is frequently used as a noun phrase to label a person.
Examples
He is such a fool, he even believes this kind of thing.
Related words
Common phrases
extremely stupid
Common mistake
Avoid using this in professional or formal settings, as it is highly offensive and can easily start a fight. It is strictly for close friends or when you are genuinely angry at someone's incompetence.
Grammar color guide
Noun
Verb
Adjective
Adverb
Pronoun
Classifier
Particle
Connector
Grammar guides
- Aspect markersCantonese has no tenses, but it does have aspect markers. Learn how zo2, gwo3, gan2, and hai2 dou6 show completion, experience, and ongoing action.
- In 30 secondsThe whole language at a glance. No tenses, no plurals, six tones, sentence particles. Read this before you dive into any specific topic.
- ParticlesSentence particles add tone, emotion, and nuance. Learn the most common particles in Cantonese and how to use them.



