な-adjectives are one of the two adjective types in Japanese. Words like 静か (quiet), 便利 (convenient), 有名 (famous), and きれい (pretty, clean) belong to this group. They get their name from the な they need before a noun: 静かな町, a quiet town.
The simplest way to handle them: a な-adjective conjugates like a noun. If you can say 学生です, 学生じゃない, and 学生でした, you already know how to say 静かです, 静かじゃない, and 静かでした.
Before a noun: な. At the end of a sentence: です / だ. Everything else works like a noun.
What does な-adjectives mean?
A な-adjective describes a quality of a person, place, or thing. English has no separate category for them; they translate as ordinary adjectives. Japanese grammar books also call them “adjectival nouns,” because they share most of their behavior with nouns.
Common N5 な-adjectives:
- 静か — quiet
- にぎやか — lively
- きれい — pretty, clean
- 有名 — famous
- 便利 — convenient
- 元気 — healthy, energetic
- 好き / 嫌い — liked / disliked
- 上手 / 下手 — good at / bad at
- 暇 — free (not busy)
- 大丈夫 — OK, all right
You can’t tell a な-adjective by its ending. Most do not end in い, but きれい and 嫌い do, and they are still な-adjectives. Learn each one with its type.
How to form な-adjectives
There are two basic positions: before a noun, and at the end of a sentence.
At the end of a sentence, な disappears and the adjective takes the same endings as a noun:
| Casual | Polite | |
|---|---|---|
| present | 静かだ | 静かです |
| negative | 静かじゃない | 静かじゃありません / 静かじゃないです |
| past | 静かだった | 静かでした |
| past negative | 静かじゃなかった | 静かじゃありませんでした |
じゃ is the spoken form of では. In formal writing you will see 静かではありません.
Two more forms appear at N5:
- で to join sentences: 静かできれいです (quiet and clean). This is the て-form of a な-adjective.
- に to make an adverb: きれいに書いてください (please write neatly).
When is な-adjectives used?
You use な-adjectives any time you describe something with one of these words:
- Describing a noun directly: 有名なレストラン (a famous restaurant), 元気な子ども (an energetic child).
- Stating a quality: この辞書は便利です (this dictionary is useful).
- Talking about likes and skills: 好き, 嫌い, 上手, and 下手 are な-adjectives that mark their object with が: 魚が好きです.
- Checking on people: お元気ですか and 大丈夫ですか are everyday greetings and check-ins.
Casual speech usually drops だ at the end of a sentence: 静かだね becomes 静かね or just 静か！ in relaxed talk. In polite speech, keep です.
な-adjectives example sentences
静かな町に住んでいます。
I live in a quiet town.
このアプリはとても便利です。
This app is really handy.
部屋はきれいじゃありません。
The room isn't clean.
昨日は暇でした。
I was free yesterday.
有名なレストランで昼ご飯を食べました。
I had lunch at a famous restaurant.
この公園は静かできれいです。
This park is quiet and pretty.
名前をきれいに書いてください。
Please write your name neatly.
Notice that な appears only in examples 1 and 5, where the adjective sits directly before a noun. Everywhere else, the adjective takes noun-style endings or で and に.
Nuance of な-adjectives
Because な-adjectives act like nouns, some of them can even be used as nouns: 元気 is also “energy” or “health,” and 自由 is also “freedom.” That overlap is why the endings match noun endings.
The difference from a real noun shows up only before another noun. A noun links with の (日本の車, a Japanese car). A な-adjective links with な (有名な車, a famous car). A few words can take either, but at N5 you only need to know each word’s main link.
The きれい trap: きれい ends in い, but the い is part of the word. The negative is きれいじゃない, never きれくない. The same goes for 嫌い → 嫌いじゃない.
大きい and 小さい are い-adjectives, but they also have the special forms 大きな and 小さな, used only before nouns: 大きな家 (a big house). Those two words do not turn into な-adjectives; you cannot say 大きなです.
な-adjectives vs い-adjectives
These two groups describe the same kinds of things but conjugate in completely different ways.
The polite past shows the biggest gap: 静かでした, but 新しかったです. Never put でした after an い-adjective, and never change the ending of a な-adjective.
Common mistakes with な-adjectives
Before a noun, a な-adjective always needs な.
な only appears before a noun. At the end of a sentence, put です straight after the adjective.
きれい is a な-adjective, so its negative uses じゃない. Treating it like an い-adjective is the most common N5 slip.
To join a な-adjective to the next phrase, use で. くて belongs to い-adjectives.
Is な-adjectives on the JLPT?
Yes. な-adjectives are core JLPT N5 grammar, and the adjectives themselves are tested as vocabulary.
At N5 you should be able to:
- Choose between な, の, and nothing before a noun
- Pick the right negative and past form (じゃない, でした) instead of い-adjective endings
- Recognize きれい and 嫌い as な-adjectives
A common question shows 有名（ ）人 with the choices な, の, い, and に. Another type offers きれくない and きれいじゃない as options for the same slot. Knowing which group each adjective belongs to answers both.
Practice questions for な-adjectives
Show answer
東京はにぎやかな町です。 — Tokyo is a lively town.
Show answer
昨日は暇じゃありませんでした。 — I wasn't free yesterday.
Show answer
この部屋は静かできれいです。 — This room is quiet and clean.
Show answer
私は肉が嫌いじゃないです。 — I don't dislike meat.
Learning path for な-adjectives
Related grammar to review next
- い-adjectives — the other adjective type, with the ending changes な-adjectives never take.
- だ・です — the same endings you put after a な-adjective at the end of a sentence.
- じゃない・ではない — the negative form な-adjectives share with nouns.
- なる — uses the に form of a な-adjective to describe a change.
- のが好き — builds on the な-adjective 好き to talk about activities you like.
Learn な-adjectives with Hane
Hane quizzes you on which group each adjective belongs to and drills the な, で, and じゃない forms in real sentences. Start with the N5 adjective set on Hane.
FAQ about な-adjectives
What does な-adjectives (na-adjectives) mean in Japanese?
な-adjectives (na-adjectives) means “Japanese na-adjectives explained”. It is JLPT N5 grammar. A な-adjective describes a quality of a person, place, or thing. English has no separate category for them; they translate as ordinary adjectives. Japanese grammar books also call them “adjectival nouns,” because they share most of their behavior with nouns.
How do you form な-adjectives (na-adjectives)?
There are two basic positions: before a noun, and at the end of a sentence. な-adjectiveなNoun 静か + な + 町 → 静かな町 な-adjectiveです / だ この町は静かです。
What is the difference between な-adjectives and い-adjectives?
な-adjectives: noun-style endings. い-adjectives: conjugate the い.
What is an example sentence with な-adjectives (na-adjectives)?
静かな町に住んでいます。 — I live in a quiet town.