どういう訳だ

what's the reason?

→ どういう

phrase Rare #34,663

what's the reason? Often used to express surprise or ask how something came about; depending on context, it can also mean “how come?”

JA: こんな時間に、どういう訳だ？

EN: What's the reason for this at such a late hour?

Why are you always late for school?

What do you mean by that?

— イル・ポスティーノ (1994)

What the hell does that mean?

— High and Low (1963)