Unimaginable or outrageous; beyond what is normal or reasonable.
匪不是；夷平常。指言谈行动离奇古怪，不是一般人根据常情所能想象的。
《周易·涣》涣有丘，匪夷所思。”
The architect's proposal to build a skyscraper upside down was simply匪夷所思.
Learn the next connected idiom: 匪夷所思 (fěi yí suǒ sī) → 思前想后 (sī qián xiǎng hòu)
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