6 Japanese Slang Words You Need to Know in 2026

Japanese Slang That Will Make Locals Say, “How Do You Know That?!🤣”

When you travel to Japan, don't you want to use some Japanese that actually surprises people?

Of course, Arigatou, Sumimasen, and Konnichiwa are useful.

But imagine a Japanese person asks you:

“Do you know any Japanese?”

And instead of giving them a textbook phrase, you suddenly use one of these.

Their reaction might be:

“Wait… HOW do you know that?!🤣”

Some of these words are extremely recent Japanese slang. If you use them at the right moment, they might even become an unexpected way to make someone laugh and start a conversation.

Here are 6 Japanese slang expressions to remember before your trip.

1. Egui（えぐい）

2. Meroi（メロい）

3. ⚪︎⚪︎sugite metsu（⚪︎⚪︎すぎて滅）

4. Dopagaki（ドパガキ）

5. Furo kyan （風呂キャン）

6. Oshi katsu（推し活）

1. えぐい — Egui

Egui

Think of this as something like:

“That's insane.” / “That's crazy.”

The interesting thing is that it can be positive OR negative.

Amazing ramen?

えぐい。Egui.

An incredible view of Tokyo?

えぐい。Egui.

Your bill is ¥30,000?

えぐい…。Egui...

It's all about context.

2. メロい — Meroi

Meroi

This comes from the Japanese expression メロメロ, meaning to be completely captivated by someone.

You might use it when someone is extremely attractive, cute, or charming.

あの人、メロい。Ano hito, meroi.

“I'm obsessed with them.”

This is definitely not the Japanese you'll find in your travel phrasebook.

3. 〇〇すぎて滅 — ○○ Sugite Metsu

⚪︎⚪︎Sugite Metsu

This is much more recent.

滅 (metsu) literally carries the idea of destruction or perishing, but in this expression it's used dramatically and jokingly.

For example:

好きすぎて滅。Suki sugite metsu.

“I like it so much I'm dead.”

Or:

かわいすぎて滅。Kawaisugite metsu.

“It's so cute I'm dead.”

It's intentionally dramatic—that's what makes it funny.

4. ドパガキ — Dopagaki

Dopa Gaki

Now we're entering deep Japanese internet territory.

This is one of those very recent words where simply knowing it may be funnier than actually using it.

Imagine someone asks:

「日本語知ってる？」

“Do you know Japanese?”

And you answer:

ドパガキ。Dopagaki.

There's a decent chance the response will be:

“Why do you know THAT?!🤣”

Sometimes knowing one completely unexpected Japanese word is enough to break the ice.

5. 風呂キャン — Furo Kyan

Furo Kyan

This comes from:

風呂 (furo) = bath キャンセル (kyanseru) = cancel

Together: 風呂キャン

Basically, you were supposed to take a shower or bath…

…but you're too tired and decide:

“Nope. Not happening tonight.”

今日、風呂キャンする。

Kyou, furo kyan suru.

“I'm skipping my shower tonight.”

A surprisingly useful expression after walking 25,000 steps around Tokyo.

6. 推し活 — Oshikatsu

Oshi Katsu

推し (oshi) is your favorite idol, artist, character, athlete, celebrity, or other person/character you support.

And 推し活 (oshikatsu) means the activities you do to support or enjoy your “oshi.”

Going to concerts.

• Buying merchandise.

• Visiting collaboration cafés.

• Taking photos with character goods.

• Traveling somewhere because of your favorite anime or idol.

All of that can be:

推し活。

Oshikatsu.

If you're coming to Japan partly because of your favorite anime, idol, artist, or character, you might already be doing oshikatsu without realizing it.

Surprise a Local With Your Japanese

You don't need to speak perfect Japanese to connect with people in Japan.

Sometimes, it's actually the unexpected words that create the best reactions.

Imagine you're sitting at an izakaya and someone asks:

“Do you speak Japanese?”

You smile and casually drop:

えぐい。Egui.

Or:

風呂キャン。Furo kyan.

Or, if you really want to confuse them:

ドパガキ。Dopagaki.

You might immediately hear:

“Why do you know that?!”

And suddenly, you have a conversation.

Japanese isn't only something you study.

It's something you can use to connect with people.

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