A1 Adjectifs 1 min read Facile

な-Adjectives: Japanese Adjectives That Need な

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Grammar Rule in 30 Seconds

Na-adjectives describe nouns and require the particle 'na' when placed directly before a noun.

  • Use 'na' before a noun: {静か|しずか}な{部屋|へや} (a quiet room).
  • Drop 'na' and use 'desu' at the end: {部屋|へや}は{静か|しずか}です (The room is quiet).
  • Use 'ja arimasen' for negative: {静か|しずか}ではありません (It is not quiet).
Na-Adjective + な + Noun OR Noun + は + Na-Adjective + です

Overview

な-adjectives (na-adjectives) are the second type of Japanese adjective. Unlike い-adjectives, they do not conjugate on their own — instead they behave more like nouns and use です/じゃない for conjugation. The defining feature is that they need な when placed before a noun: きれいな人 (pretty person), 静かな部屋 (quiet room), 有名な人 (famous person).
Common な-adjectives include: きれい (pretty/clean), 静か (quiet), 有名 (famous), 元気 (energetic/healthy), 好き (liked/favorite), 嫌い (disliked), 上手 (skilled), 下手 (unskilled), 大切 (important), 簡単 (simple), 大変 (tough), 便利 (convenient). For conjugation, な-adjectives use the copula: Present: 静かです (it is quiet). Negative: 静かじゃないです or 静かではありません (it is not quiet).
Past: 静かでした (it was quiet). Past negative: 静かじゃなかったです (it was not quiet). A key trap for learners: some words look like い-adjectives but are actually な-adjectives — きれい (pretty) and 嫌い (dislike) both end in い but require な before nouns.
The telltale sign is that their い is part of the word stem, not a conjugatable ending.

Na-Adjective Conjugation

Form Affirmative Negative
Non-past
静かです
静かではありません
Past
静かでした
静かではありませんでした
Te-form
静かで
---

Casual Forms

Form Casual
Non-past
静かだ
Negative
静かじゃない

Meanings

Na-adjectives (or adjectival nouns) are words that describe the state or quality of a noun. They function similarly to nouns but act as descriptors.

1

Attributive

Modifying a noun directly.

“{きれい|きれい}な{花|はな}”

“{有名|ゆうめい}な{場所|ばしょ}”

Reference Table

Reference table for な-Adjectives: Japanese Adjectives That Need な
Form Structure Example
Attributive
Adj + な + Noun
きれいな花
Predicative
Noun + は + Adj + です
花はきれいです
Negative
Noun + は + Adj + ではありません
花はきれいではありません
Past
Noun + は + Adj + でした
花はきれいでした
Question
Noun + は + Adj + ですか？
花はきれいですか？

Spectre de formalité

Formel
部屋は静かです。

部屋は静かです。 (Describing a room)

Neutre
部屋は静かだ。

部屋は静かだ。 (Describing a room)

Informel
部屋、静かだね。

部屋、静かだね。 (Describing a room)

Argot
部屋、静か。

部屋、静か。 (Describing a room)

Na-Adjective Connections

Na-Adjective

People

  • 親切 kind
  • まじめ serious

Places

  • 静か quiet
  • にぎやか lively

I vs Na Adjectives

I-Adjectives
暑い hot
Na-Adjectives
きれい pretty
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Exemples par niveau

1

{きれい|きれい}な{花|はな}です。

It is a beautiful flower.

2

{元気|げんき}ですか？

Are you well?

3

{簡単|かんたん}な{本|ほん}です。

It is an easy book.

4

{部屋|へや}は{静か|しずか}です。

The room is quiet.

1

{親切|しんせつ}な{人|ひと}ではありません。

He is not a kind person.

2

{有名|ゆうめい}な{場所|ばしょ}でした。

It was a famous place.

3

{便利|べんり}な{道具|どうぐ}ですね。

It's a convenient tool, isn't it?

4

{好き|すき}な{食べ物|たべもの}は何ですか？

What is your favorite food?

1

{にぎやか|にぎやか}で{楽しい|たのしい}町です。

It is a lively and fun town.

2

{まじめ|まじめ}に{勉強|べんきょう}しています。

I am studying seriously.

3

{大切|たいせつ}な{約束|やくそく}を忘れないで。

Don't forget the important promise.

4

{複雑|ふくざつ}な{問題|もんだい}ですね。

It's a complicated problem, isn't it?

1

{十分|じゅうぶん}な{時間|じかん}がありません。

I don't have enough time.

2

{自由|じゆう}な{時間|じかん}を大切にしたい。

I want to value my free time.

3

{特別|とくべつ}な{日|ひ}に{食事|しょくじ}に行こう。

Let's go out to eat on a special day.

4

{必要|ひつよう}な{書類|しょるい}を準備してください。

Please prepare the necessary documents.

1

{見事|みごと}な{演技|えんぎ}でした。

It was a brilliant performance.

2

{曖昧|あいまい}な{態度|たいど}は避けるべきだ。

One should avoid ambiguous attitudes.

3

{華やか|はなやか}な{パーティー|パーティー}だった。

It was a glamorous party.

4

{穏やか|おだやか}な{性格|せいかく}が{好|この}まれる。

A calm personality is preferred.

1

{滑らか|なめらか}な{口調|くちょう}で話す。

He speaks in a smooth tone.

2

{健やか|すこやか}な{成長|せいちょう}を願う。

I wish for healthy growth.

3

{密か|ひそか}な{楽しみ|たのしみ}がある。

I have a secret pleasure.

4

{鮮やか|あざやか}な{色彩|しきさい}の絵画。

A painting with vivid colors.

Facile à confondre

な-Adjectives: Japanese Adjectives That Need な vs I-Adjectives

Learners add 'na' to i-adjectives.

な-Adjectives: Japanese Adjectives That Need な vs Nouns

Learners forget 'na' when using na-adjectives.

な-Adjectives: Japanese Adjectives That Need な vs Adverbs

Using 'na' instead of 'ni' for verbs.

Erreurs courantes

✗

きれいなです

✓

きれいです

Don't use 'na' when ending a sentence.
✗

静かです部屋

✓

静かな部屋

Must use 'na' to modify a noun.
✗

きれいい

✓

きれい

Do not add 'i' to na-adjectives.
✗

親切なです

✓

親切です

Redundant 'na'.
✗

きれいじゃありません

✓

きれいではありません

Formal negative is preferred.
✗

静かでしたです

✓

静かでした

Double tense marker.
✗

有名じゃないです

✓

有名ではありません

Register mismatch.
✗

静かでな部屋

✓

静かな部屋

Te-form is for linking, not modifying.
✗

親切に人

✓

親切な人

Adverbial 'ni' vs adjectival 'na'.
✗

便利だ部屋

✓

便利な部屋

Must use 'na', not 'da'.
✗

きれいなを食べる

✓

きれいなものを食べる

Missing noun.
✗

静かなに話す

✓

静かに話す

Adverbial usage requires 'ni'.
✗

有名の場所

✓

有名な場所

Using 'no' instead of 'na'.

Structures de phrases

___な___です。

___は___ではありません。

___で___な___です。

___に___します。

Real World Usage

Social Media very common

きれいな景色！

Texting very common

元気？

Job Interview common

まじめな性格です。

Travel common

便利な場所ですね。

Food Delivery occasional

簡単な注文です。

Academic Writing constant

複雑な問題である。

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💡

The 'i' test

If the word ends in 'i' but you aren't sure, check a dictionary. Most na-adjectives don't end in 'i'.
⚠️

Don't over-conjugate

Na-adjectives don't conjugate like verbs. They only change the 'desu' part.
🎯

Use 'na' as a bridge

Whenever you feel like you need a connector, 'na' is your best friend.
💬

Politeness

Always use 'desu' with na-adjectives in polite conversation.

Smart Tips

Check if it's a na-adjective. If so, add 'na'.

静か部屋 → 静かな部屋

Never use 'na' at the end of a sentence.

部屋は静かなです → 部屋は静かです

Remember it's a na-adjective, not an i-adjective.

きれいい花 → きれいな花

Use 'de' for na-adjectives.

静かなで綺麗な部屋 → 静かで綺麗な部屋

Prononciation

na

Na particle

Pronounced like 'nah'. Keep it short.

Statement

静かです ↘

Falling intonation for facts.

Question

静かですか ↗

Rising intonation for questions.

Mémorise-le

Moyen mnémotechnique

Remember: 'Na' is the 'Name-tag' for the noun. It sticks the adjective to the noun like a name tag.

Association visuelle

Imagine a sticky note (the 'na') being placed between a person and a label. Without the sticky note, the label falls off!

Rhyme

When the noun is near, add 'na' to make it clear.

Story

Taro is a kind person. He is a '{親切|しんせつ}な{人|ひと}'. When he stands alone, he is just '{親切|しんせつ}です'. He always carries his 'na' glue when he meets a noun.

Word Web

きれい静か親切有名便利簡単

Défi

Look around your room and write down 5 things using a na-adjective + 'na' + noun.

Notes culturelles

Na-adjectives are essential for polite speech.

Often uses 'ya' instead of 'da'.

Using correct na-adjectives shows respect.

Na-adjectives evolved from nouns that took the particle 'naru' (to be) in classical Japanese.

Amorces de conversation

“

好きな食べ物は何ですか？

“

この町は静かですか？

“

親切な人についてどう思いますか？

“

簡単な仕事と複雑な仕事、どちらが好きですか？

Sujets d'écriture

Describe your best friend using three na-adjectives.
Describe your favorite place in your city.
Write about a difficult experience you had.
Discuss the importance of being a 'serious' person in work.

Erreurs courantes

Incorrect

Correct

Incorrect

Correct

Incorrect

Correct

Incorrect

Correct

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Test Yourself

Fill in the blank.

これは___な本です。(easy)

✓ Correct! ✗ Not quite. Correct answer: 簡単な
Needs 'na' to modify the noun.
Choose the correct sentence. Choix multiple

Which is correct?

✓ Correct! ✗ Not quite. Correct answer: 静かです
No 'na' at the end of a sentence.
Fix the error. Error Correction

Find and fix the mistake:

暑いな日

✓ Correct! ✗ Not quite. Correct answer: 暑い日
I-adjectives don't need 'na'.
Change to negative. Sentence Transformation

きれいです。

✓ Correct! ✗ Not quite. Correct answer: きれいではありません
Formal negative.
Reorder the words. Sentence Building

人 / 親切な / です / 彼は

✓ Correct! ✗ Not quite. Correct answer: 彼は親切な人です
Correct Japanese word order.
Match the adjective to its meaning. Match Pairs

Match each item on the left with its pair on the right:

✓ Correct! ✗ Not quite. Correct answer: Quiet
Basic vocabulary.
Conjugate to past tense. Conjugation Drill

有名です

✓ Correct! ✗ Not quite. Correct answer: 有名でした
Past tense of desu.
True or False? True False Rule

Na-adjectives always end in 'na'.

✓ Correct! ✗ Not quite. Correct answer: False
They only use 'na' when modifying a noun.

Score: /8

Exercices pratiques

8 exercises
Fill in the blank.

これは___な本です。(easy)

✓ Correct! ✗ Not quite. Correct answer: 簡単な
Needs 'na' to modify the noun.
Choose the correct sentence. Choix multiple

Which is correct?

✓ Correct! ✗ Not quite. Correct answer: 静かです
No 'na' at the end of a sentence.
Fix the error. Error Correction

Find and fix the mistake:

暑いな日

✓ Correct! ✗ Not quite. Correct answer: 暑い日
I-adjectives don't need 'na'.
Change to negative. Sentence Transformation

きれいです。

✓ Correct! ✗ Not quite. Correct answer: きれいではありません
Formal negative.
Reorder the words. Sentence Building

人 / 親切な / です / 彼は

✓ Correct! ✗ Not quite. Correct answer: 彼は親切な人です
Correct Japanese word order.
Match the adjective to its meaning. Match Pairs

静か

✓ Correct! ✗ Not quite. Correct answer: Quiet
Basic vocabulary.
Conjugate to past tense. Conjugation Drill

有名です

✓ Correct! ✗ Not quite. Correct answer: 有名でした
Past tense of desu.
True or False? True False Rule

Na-adjectives always end in 'na'.

✓ Correct! ✗ Not quite. Correct answer: False
They only use 'na' when modifying a noun.

Score: /8

FAQ (8)

Because it requires the particle 'na' when modifying a noun.

No, 'no' is for nouns. 'Na' is specifically for na-adjectives.

Most are, but some like 'kirei' are na-adjectives.

Check a dictionary or see if it takes 'na' before a noun.

Yes, just use 'desu' or 'de gozaimasu'.

No, it is a na-adjective despite ending in 'i'.

It will sound unnatural to native speakers.

Yes, they are very common in daily life.

Scaffolded Practice

1

1

2

2

3

3

4

4

Mastery Progress

Needs Practice

Improving

Strong

Mastered

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In Other Languages

Spanish moderate

Adjetivos

Japanese na-adjectives are invariant.

French moderate

Adjectifs

Fixed position in Japanese.

German low

Adjektive

No declension in Japanese.

Chinese partial

形容词

The particle usage is functionally similar.

Arabic low

الصفات

No agreement in Japanese.

Japanese high

形容動詞

It is the rule itself.

Learning Path

Prerequisites

Previous
い-Adjectives: Japanese Adjectives That Conjugate

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