When to Use This Idiom
Use 莫名其妙 when:
- You are confused by someone's behavior
- Something happens without a clear cause
- A situation feels weird or absurd
Example Sentences
他刚才还很高兴，突然就生气了，真是莫名其妙。
Tā gāngcái hái hěn gāoxìng, tūrán jiù shēngqì le, zhēnshi mòmíngqímiào.
He was happy just now, but suddenly got angry; it's really baffling.
我今天一直觉得很累，也是莫名其妙的。
Wǒ jīntiān yìzhí juéde hěn lèi, yěshì mòmíngqímiào de.
I've been feeling tired all day for no apparent reason.