fei2 ji4 so2 si1匪夷所思

Jyutpingfei2 ji4 so2 si1
Yaleféi yìh só sī
形容詞Uncommon

Definition

Unbelievable, bizarre, or unimaginable; extremely extraordinary or borderline impossible.

colloquialdescriptions

How it's used

This idiom carries a strong sense of disbelief or shock, often used when someone's behavior or a situation defies common logic. While it is a four-character idiom, it is frequently used in spoken Cantonese to emphasize that something is beyond the realm of normal human expectation. It is more intense than simply saying something is strange or weird.

Examples

This result is completely beyond imagination, I never saw it coming.

Common phrases

makes one find it hard to believe

Common mistake

Learners often mistake this for a simple adjective like strange, but it implies a level of impossibility or absurdity that makes it unsuitable for minor inconveniences or everyday oddities.

Grammar color guide

Noun
Verb
Adjective
Adverb
Pronoun
Classifier
Particle
Connector