I’m proud of you.：”sugoi jan！” Japanese Phrase #271

Yuka

If you watch Japanese TV or anime, you’ve probably heard すごいじゃん — let’s break it down!

What Does すごいじゃん Mean?

すごいじゃん is a casual exclamation used to express surprise and admiration. じゃん is a colloquial sentence-ending particle (originally from Yokohama dialect, now used nationwide) meaning “isn’t it?” or “right?”

Together: “That’s amazing, isn’t it!” — used to praise someone or react to impressive news.

How じゃん Works

じゃん = じゃない (isn’t it?) in casual speech. It softens a statement into a shared observation:

• すごいじゃん！ — That’s amazing, right?!
• うまいじゃん！ — You’re good at this, aren’t you!
• かわいいじゃん！ — That’s cute, isn’t it!

Rei

Can I use じゃん with anyone?

Yuka

Only with friends or people your age or younger. It’s very casual — don’t use it with bosses or teachers!

Conversation Examples

A: 試験、100点取ったよ！
I got 100 on the test!

B: すごいじゃん！おめでとう！
That’s amazing! Congratulations!

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A: 自分でアプリ作ったんだ。
I built an app by myself.

B: えー、すごいじゃん！
Wow, that’s incredible!

Formal Alternatives

Quick Quiz

Your friend just got a scholarship to study abroad. How do you react casually?

• a) さすがですね
• b) すごいじゃん！
• c) すごいです

Answer: b) すごいじゃん！ — the most natural casual reaction.

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