Definition
癫 (diān) is a stative verb meaning 'crazy, insane'. It is typically used in formal, medical, or literary contexts, often in compounds like 癫痫 (epilepsy) and 疯癫 (madness). It is less common in everyday speech than 疯 (fēng). Use 癫 to describe a state of mental derangement, but be aware of its strong connotations.
s.v.
crazyinsane (formal, medical, or literary)
Examples
- 。Tā zuìjìn xíngwéi yǒuxiē fēngdiān.He's been acting a bit crazy lately.
- 。Tā tūrán biàn de hěn fēngdiān.She suddenly became very crazy.
- 。Tā nǎozi yǒudiǎn fēngdiān le.His mind has become a bit deranged.
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