そりゃそうだ

expression

that's true; of course; obviously

Colloquial expression of agreement, often with a nuance of 'well, obviously' or 'that figures'. Used in casual conversation.

• A: 明日あしたは休やすみだね。B: そりゃそうだ、日にち曜よう日びだもん。

  A: Tomorrow's a day off, right? B: Well, of course—it's Sunday.

• そりゃそうだよ。誰だれだってそう思おもうさ。

  That's true. Anyone would think so.