42 Cool Japanese Words and Phrases To Start Using Now

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Ready to add some expressive Japanese to your vocabulary and sound めっちゃオシャレ (meccha oshare, “very fashionable”)?

Then start adding some cool Japanese words to your vocabulary!

This collection mixes ordinary vocabulary, set phrases, slang, idioms, mimetic words and adjectives from Japanese language and culture. Those categories matter because they are not interchangeable.

Take 絵文字 (emoji), for example. The word combines 絵 (e, “picture”) and 文字 (moji, “written character”).

The slang entries are casual and depend on the relationship, while several nouns and idioms can appear in neutral writing. The set phrases have their own social contexts.

Before using a new expression, check whether it is standard, literary, casual, blunt or dated. A word that works with a close friend may not suit a stranger, manager or senpai.

With that register check in place, these words can make your Japanese more precise and expressive.

行こう！ (Ikou, “Let’s go!”)

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Here's a Quick “Cool Japanese Words” Video I Made To Get You Started:

Enjoy watching the video first! I'll share some of the coolest Japanese words, and how to pronounce them.

Once you’ve watched the video, read on for all 42 Japanese words and phrases.

Japanese Words With Distinctive Meanings

While every language has unique words that don’t translate well, I’m partial to those in Japanese.

Some of these words need a longer explanation in English. Others are ordinary Japanese words that were given an inaccurate poetic gloss in older versions of this list.

Learn the meaning and context together, and you will be more likely to recognise them accurately.

• 木漏れ日 (komorebi) is sunlight filtering through the leaves of trees.
• 浮世 (ukiyo) means “floating world”. Historically it has referred both to the transience of life and, in the Edo period, to the urban world of entertainment depicted in 浮世絵 (ukiyo-e).
• 森林浴 (shinrin-yoku) literally means “forest bathing”. It describes spending time in a forest environment rather than taking a literal bath.
• 積読 (tsundoku) is the habit of acquiring books and leaving them piled up unread.
• 食い倒れ (kuidaore) means ruining yourself financially through extravagant eating. The expression is especially associated with Osaka’s food culture.
• 渋い (shibui) is an I-adjective. It can describe an astringent taste or something understated, mature and stylish.
• 取り戻す (torimodosu) is an ordinary verb meaning “to regain”, “recover” or “take back”.

Cool Japanese Phrases for Everyday Situations

There are many set phrases in Japanese that have no real equivalent in English. But these are prominent in everyday life in Japan.

Knowing these and how to use them will help you sound more natural and respectful.

• おつかれ (otsukare) is a casual shortening of お疲れ様です (otsukaresama desu) or お疲れ様でした (otsukaresama deshita). It can acknowledge someone’s effort or work as a greeting or goodbye among colleagues and friends.
• お邪魔します (ojama shimasu) is a polite phrase used when entering someone’s home or space. It literally frames your visit as an intrusion. When leaving, you can say お邪魔しました (ojama shimashita).
• いただきます (itadakimasu) is said before eating. It literally means “I humbly receive” and expresses appreciation for the meal and what went into providing it. “Let’s eat” and “Bon appétit” are only loose subtitle equivalents.
• ごちそうさまでした (gochisousama deshita) is said after eating to express gratitude for the meal. You may address it to the person who provided the food, but it also functions as a general closing phrase after a meal.
• よろしくお願いします (yoroshiku onegai shimasu) is used in introductions, requests and new working relationships. It has no single English translation; “Nice to meet you”, “I look forward to working with you” or “Thank you in advance” may fit, depending on context. よろしく (yoroshiku) is a casual form.

Cool Casual Japanese and Slang Words

This section mixes current slang, ordinary casual reactions and one dated internet expression. Recognise the register before you copy it.

• やばい (yabai) is flexible slang. Depending on context and tone, it can mean something is amazing, delicious, dangerous, awful or simply intense.
• すごい (sugoi) is a common adjective and reaction meaning “amazing”, “great” or “wow”. The rougher casual form すげー (sugee) comes from the same word.
• ウケる (ukeru) is a casual reaction meaning “That’s funny” or “That cracks me up”.
• なう (nau) comes from the English word “now”. It became popular in posts on Twitter around the early 2010s, but now reads as dated or deliberately nostalgic internet slang.
• 超 (chou) is a casual intensifier meaning “very” or “super”, as in 超かわいい (chou kawaii, “super cute”). You may also see the slangy spelling ちょー.
• めっちゃ (meccha) also means “very” or “really”. It began in Kansai and is now used casually across Japan.
• まじ (maji) or まじで (maji de) means “seriously” or “for real”. For example, このケーキ、まじでおいしい！ (Kono keeki, maji de oishii!) means “This cake is seriously delicious!”
• テキトー (tekitou) often means “careless”, “half-hearted” or “random” in casual speech. The standard word 適当 can also mean “suitable” or “appropriate”, so context matters.
• KY abbreviates 空気読めない (kuuki yomenai), from 空気が読めない, literally “cannot read the air”. It describes someone who misses the mood or social cues.

Cool Japanese Idioms, Including Yojijukugo

Yojijukugo (四字熟語) are four-character compounds, many of which function as idioms. This section also includes 朝飯前, a useful three-character idiom.

• 一石二鳥 (isseki nichou) literally means “one stone, two birds”, equivalent to “kill two birds with one stone”.
• 朝飯前 (asameshi mae) literally means “before breakfast” and describes something easy. It has three kanji, so it is an idiom but not a yojijukugo.
• 悪戦苦闘 (akusen kutou) means struggling hard against difficulties or fighting an uphill battle.
• 以心伝心 (ishin denshin) describes a tacit, wordless understanding between people.
• 一期一会 (ichigo ichie) expresses the idea that an encounter is unique and should be treasured as a once-in-a-lifetime meeting.
• 一刻千金 (ikkoku senkin) literally makes one moment worth a thousand pieces of gold. It emphasises the precious value of a fleeting moment rather than the economic idea that “time is money”.
• 自画自賛 (jiga jisan) literally means praising your own painting. It describes praising your own work or achievements.

Cool Japanese Onomatopoeia and Mimetics

Japanese mimetic words can represent sounds, movement, physical states and feelings. They are common in both conversation and writing.

• ドキドキ (dokidoki) represents a pounding heart. ドキドキする (dokidoki suru) means your heart is racing with excitement, nervousness or anticipation.
• ぞっと (zotto) describes a shudder or chill from fear or disgust, as in ぞっとする (zotto suru).
• ムカつく (mukatsuku) is a colloquial verb for feeling irritated, annoyed or sick to your stomach. It is related to ムカムカする (mukamuka suru).
• ぐっすり (gussuri) means “soundly” when talking about sleep. 夕べはぐっすり眠れましたか (Yuube wa gussuri nemuremashita ka) asks “Did you sleep soundly last night?”
• ガツガツ (gatsugatsu) can describe eating greedily, as in ガツガツ食べる (gatsugatsu taberu). It can also describe someone acting aggressively eager for something.
• ペコペコ (pekopeko) can mean “very hungry”. お腹ぺこぺこ！ (Onaka pekopeko!) means “I’m starving!”
• キョロキョロ (kyorokyoro) describes looking around restlessly, curiously or nervously, as in キョロキョロする (kyorokyoro suru).

Useful Japanese Adjectives and Descriptions

By now, you might have learned several Japanese adjectives to describe situations or people. But why not learn some cool, popular adjectives to add a bit more color than the generic きれい (kirei, “pretty” or “clean”) and かわいい (kawaii, “cute”)?

• うまい (umai) can mean “skilful”, “good” or “delicious”. As a reaction to food, it is a casual alternative to 美味しい (oishii).
• うざい (uzai) means “annoying” or “a pain”. It is casual and blunt when aimed at a person.
• 怠い (darui) means sluggish, heavy, listless or tired. It can describe how your body feels when you are worn out or unwell.
• めんどい (mendoi) is a casual contraction of 面倒くさい (mendoukusai, “bothersome” or “a pain”).
• 呑気な (nonki na) describes someone carefree, easygoing or unconcerned, as in 呑気な人 (nonki na hito).
• 感情的な (kanjouteki na) means “emotional” or driven by emotion, as in 感情的な人 (kanjouteki na hito).
• 複雑な (fukuzatsu na) means “complicated” or “complex”. 複雑な関係 (fukuzatsu na kankei) is a complicated relationship, while 複雑な心境 (fukuzatsu na shinkyou) means mixed or complicated feelings.

A Note About Making Words “Cool” in Japanese

Casual Japanese sometimes creates playful blends, shortenings and sound changes. These patterns are productive, but they do not apply mechanically to every word.

For instance, おしゃかわ (oshakawa) blends おしゃれ (oshare, “stylish”) and かわいい (kawaii, “cute”). Coinages like this can be playful and trend-sensitive, so check current examples before adopting one.

Different casual forms follow different sound patterns. すごい (sugoi, “amazing”) can become the rougher すげー (sugee), while やばい (yabai) can be clipped to やばっ (yaba). A word-final small っ marks an abrupt cut-off, while ー shows that the preceding vowel is prolonged.

These are casual sound changes, not a rule that lets you drop the final い from any I-adjective. If the kana terminology is new, start with this guide to hiragana and katakana.

What Are Your Favourite Cool Japanese Words?

What expressive words do you like to use in your language? Have you learnt the Japanese equivalent? Let me know your favourite Japanese words in the comments.