Chau ちゃう

Informal equivalent of te shimau (usually used by women)

Meaning: be going to (do), finish (doing), (do something) completely.

It is used after stem of te-form of verbs whose dictionary form ends with: -u, -ku, -tsu, or –ru.

It becomes jau (the informal version of de shimau) after the stem of te-form of verbs whose dictionary form ends with: -bu, -gu, -mu, or –nu.

It is sometimes followed by no when forming a question. The past forms are chatta/jatta (plain) and chaimashita/jaimashita (polite).

1. After the stem of te-form of verb

もう帰っちゃうんですか。

Mou kaechau ndesuka.

Are you going to leave so soon?

今日はどんどん飲んじゃいます。

Kyou wa dondon nonjaimasu.

I’m going to drink like a crazy today.

彼女に悪いことをしちゃいました。

Kanojo ni warui koto o shichaimashita.

I’ve done wrong to her.

-> See also te shimau