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Amenokori
JLPT N4

だい

だい is an informal sentence-ending particle. It makes questions sound direct and often masculine. And it makes statements sound childish and assertive.

Readings

1 Particle

"What/Why/Where is it?" (in questions)

Used at the end of a sentence, usually after a question word (like 何, どこ, どうして), to ask a direct, informal question.

Example

一体 、 何 が あっ た ん だい ？

What in the world happened?

3 more examples in the mobile app
2 Particle

"It is..." / "I am..." (assertive)

Used at the end of a statement to make a strong, simple declaration with a childish tone.

Usage notes & examples available in the mobile app
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だい
だい
だい is an informal sentence-ending particle. It makes questions sound direct and often masculine. And it makes statements sound childish and assertive.
Example

この言葉を覚えましょう。

Let's memorize this word.

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