A colloquial way to end a conversation or to introduce a remark; equivalent to 'well then' or 'so then' (cf. それでは).
それじゃ、そろそろ行くね。ありがとう！
Well then, I'm going to head off soon. Thanks!
それじゃ、会議を始めましょう。
Well then, let's begin the meeting.
それじゃあ、また明日。
All right then, see you tomorrow.
A colloquial conjunction meaning 'so' or 'then' used to continue from a given situation or result.
雨が降っている。それじゃ、外出はやめよう。
It's raining. Then let's not go out.
時間がない。それじゃ短く説明します。
We don't have much time. So I'll explain briefly.
An expression meaning 'if that's the case' or 'in that case'.
人数が足りない。それじゃ、弟にも手伝ってもらおうか。
We're short on people. In that case, shall we ask my brother to help?
締切が明日だって？それじゃ急いで仕上げないと。
The deadline is tomorrow? In that case we have to finish quickly.
An interjection used as a casual goodbye: 'bye then'.
そろそろ帰るね。んじゃ、それじゃ！
I'm heading home soon. Well then, bye!
それじゃ、また！気をつけて。
Bye then! Take care.