have to wait, must wait
どうしてクリスマスを待たなきゃいけないんだ？
Why do we have to wait until Christmas?
ここで待たなきゃならん
I gotta wait here.
— レザボア・ドッグス (1992)
あとどれくらい待たなきゃいけないの？
How much longer do I have to wait?
俺はアパートの中でじっと電話を待たなきゃならなかった
I had to stay put in the apartment and wait for the phone call.