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50 Japanese Slang Words To Help You Sound More Natural

Ichika Yamamoto

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Ichika Yamamoto

50 Japanese Slang Words To Help You Sound More Natural

Learning textbook Japanese is important for building a strong grammatical foundation.

Native Japanese speakers rarely talk like a textbook in their daily lives.

You’ll hear slang words constantly in anime, manga, and everyday casual conversations.

Understanding these informal expressions helps bridge the gap between classroom studying and real-world fluency.

Using slang correctly makes it easier to connect with native speakers.

Here are 50 common Japanese slang words to help you sound much more natural.

Japanese slang for greetings

Starting and ending a conversation casually sets a relaxed tone.

Instead of formal greetings, friends often use shortened versions of standard words.

These phrases are best used with close friends or people younger than you.

Slang WordRomajiMeaning
おっすOssuHey / Sup (mostly masculine)
やっほーYahho-Yoo-hoo / Hey (mostly feminine)
よっYoYo / Hey
ちわっすChiwassuHello (short for konnichiwa)
どうもDoumoHi / Thanks (casual acknowledgment)
あざっすAzassuThanks (short for arigatou gozaimasu)
おつOtsuGood job / Bye (short for otsukaresama)
じゃーねJaa neSee ya
バイビーBaibiiBye-bye (playful)

Expressing feelings and reactions

Japanese culture relies heavily on listener reactions during a conversation.

Native speakers use short slang words to show they’re listening and engaged.

Many of these words can mean completely different things depending on your tone of voice.

Slang WordRomajiMeaning
やばいYabaiAwesome / Terrible / Crazy
まじMajiSeriously? / Really?
ChouSuper / Extremely
すげーSugeeAmazing / Wow (masculine version of sugoi)
めっちゃMecchaVery / Insanely
きもいKimoiGross / Creepy (short for kimochi warui)
うざいUzaiAnnoying (short for urusai)
むかつくMukatsukuPissed off / Annoyed
ガチGachiFor real / Dead serious
どんまいDonmaiDon’t mind / No worries
うそUsoNo way / You’re lying
しまったShimattaDarn it / Oops
ぱないPanaiIncredible (short for hanpanai)
ウケるUkeruHilarious / That’s funny
ダサいDasaiLame / Uncool
微妙BimyouMeh / Not great / Sketchy

Here’s an example of how you might hear these reaction words used in real life.

Listen to audio

まじで?

Maji de?
Are you serious?
Listen to audio

このケーキ、めっちゃ美味しい!

Kono ke-ki, meccha oishii!
This cake is insanely delicious!

Describing people

There are many specific slang words used to categorize people in Japan.

These terms are frequently used on television shows and in pop culture.

Be careful when using some of these, as they can be mildly insulting.

Slang WordRomajiMeaning
イケメンIkemenHandsome, cool guy
ギャルGyaruGal / Fashionable young woman
リア充RiajuuSomeone living a fulfilling offline life
オタクOtakuGeek / Nerd (highly obsessed with a hobby)
チャラ男CharaoPlayboy / Flirty guy
ぼっちBocchiLoner / Someone without friends
ヤンキーYankiiDelinquent
パリピParipiParty person
おっさんOssanMiddle-aged man (often derogatory)
JKJoshi KouseiHigh school girl

Internet and text slang

Japanese internet culture has created its own unique vocabulary.

You’ll see these terms constantly if you use Japanese social media platforms.

Many of these words use the English alphabet instead of Japanese characters.

Slang WordRomajiMeaning
wWaraLOL / Laughing
KusaLOL (literally “grass”, because ‘www’ looks like grass)
KYKuuki YomenaiSomeone who cannot read the room
なうNauDoing right now (from English “now”)
りょRyoUnderstood (short for ryokai)
OtsuGood work (internet shorthand for otsukaresama)
エモいEmoiEmotional / Nostalgic

If someone sends you a funny text, you might reply like this.

Listen to audio

それウケる草。

Sore ukeru kusa.
That's hilarious lol.
Listen to audio

りょ!

Ryo!
Understood!

Actions and everyday situations

Japanese slang frequently turns foreign loan words into verbs by adding “suru” (to do) or “ru” at the end.

This makes it very easy to create new slang verbs on the spot.

These words describe common actions you’ll encounter every day in Japan.

Slang WordRomajiMeaning
サボるSaboruTo skip class or work (from “sabotage”)
ググるGuguruTo Google something
チンするChin suruTo microwave something (from the “ding” sound)
ドタキャンDotakyanLast minute cancellation
オールOoruStaying up all night (from “all night”)
ディスるDisuruTo disrespect or insult someone (from “diss”)
バズるBazuruTo go viral (from “buzz”)
コスパKosupaValue for money (cost performance)

You can easily conjugate these slang verbs just like regular Japanese verbs.

Listen to audio

分からないから、ググる。

Wakaranai kara, guguru.
I don't know, so I'll Google it.
Listen to audio

弁当をチンした。

Bento o chin shita.
I microwaved the bento.

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