行かなくっちゃ

have to go, must go

→ 行く
行か to go + なく Negative + っちゃ necessity (“must”)
verb · informal Rare #35,684
have to go, must go Colloquial contraction of 行かなくては (いけない).
JA: もう行かなくっちゃ。
EN: I have to go now.
Conjugation of 行く

一人で行かなくっちゃだめだよ。

You have to go by yourself.

雪だけど、行かなくっちゃ。

It’s snowing, but I have to go.

僕たち、もう行かなくっちゃ。

We have to go now.

銀行に行かなくっちゃ。

I have to go to the bank.

もう、行かなくっちゃ。

I have to get going now.