い

particle

sentence-final particle for emphasis

Familiar, masculine-leaning particle that strengthens a question, assertion, or invitation. Similar to かい, だい, and わい, but with a blunt, emphatic feel. Often used in casual male speech.

See also: かい · ぞい · だい · わい

• 何なにしてるんだい？

  What are you doing?

• そんなことあるかい。

  Is that really the case?