無いと

ないと

have to (do, be); must (do, be); is indispensable; is absolutely necessary

Meaning

exp abbreviation
have to (do, be); must (do, be)
exp abbreviation
is indispensable; is absolutely necessary

Example sentences

授業が全然無いとでも言うの？！

You never have class or what?!
あなたが説明する必要は無いと思いますよ。

I don't think there is any need for you to explain.
その男は、私が何者かと尋ねてきたが、私は答える必要は無いと考えた。

The man asked me who I was, but I didn't think I had to answer.