ci1 sin3黐綫黐线
Jyutpingci1 sin3
Yalechī sin
Definition
Crazy; insane; out of one's mind.
colloquialpeopleslang
How it's used
Originally referring to crossed telephone lines causing interference, this term has evolved into a common way to label someone as irrational or acting bizarrely. It carries a strong informal weight and can be offensive if used to describe someone with actual mental health struggles. Use it primarily for lighthearted teasing or expressing disbelief at someone's nonsensical actions.
Examples
Are you crazy? Why did you throw away my stuff?
Related words
Common mistake
Avoid using this to describe clinical mental health conditions, as it is derogatory and insensitive in those contexts. Stick to using it for erratic behavior or absurd ideas.
Grammar color guide
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Grammar guides
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- ParticlesSentence particles add tone, emotion, and nuance. Learn the most common particles in Cantonese and how to use them.
- Possession (嘅)How to say my, your, and his, and how to link a describing word to a noun, all with the little word 嘅 (ge3).



