な-Adjectives (na-adjectives)
Learning Objectives
- Identify な-Adjectives and distinguish them from い-Adjectives.
- Conjugate な-Adjectives using the Copula (です / でした).
- Use the particle な to connect these adjectives directly to nouns.
- Form adverbs using the particle に.
In the previous chapter, we learned that い-Adjectives are so powerful they can conjugate themselves to show tense. But Japanese has a second, completely different group of describing words: な-Adjectives (na-adjectives).
Grammatically, な-Adjectives are actually Nouns! Because they act like nouns, they cannot change their own endings. Instead, they rely entirely on the Copula verb that we learned in Chapter 09 (です, じゃありません, でした) to do all the work. If you mastered Chapter 09, you already know exactly how to conjugate な-Adjectives! Let’s see how they work.
1. Defining a な-Adjective
How do you know if a word is an い-Adjective or a な-Adjective?
- い-Adjectives always end in the Hiragana character い.
- な-Adjectives usually end in something else! (e.g., Shizuka, Genki, Benri).
- The Trick: There is a tiny handful of な-Adjectives that deceptively end in the sound “i”, but are spelled with Kanji that hide it, or are special exceptions. The two most famous traps are きれい (Kirei - Beautiful/Clean) and ゆうめい (Yuumei - Famous). Despite ending in “i”, these are な-Adjectives!
2. Conjugating with the Copula
Because な-Adjectives are essentially nouns, you just put them in the A slot of an “A is B” sentence. The adjective itself never changes. You just alter the です at the end of the sentence.
この へや は しずか です。
Kono heya wa shizuka desu.
This room is quiet.
あした は ひま じゃありません。
Ashita wa hima ja arimasen.
Tomorrow I am not free.
きのう の パーティー は にぎやか でした。
Kinou no pātī wa nigiyaka deshita.
Yesterday's party was lively.
3. Direct Noun Modification: The “な” Particle
Here is where な-adjectives get their name! When you want to place the adjective directly in front of a noun (e.g., “A quiet room”), you cannot just smash them together. Because both words are technically nouns, you must glue them together using the particle な (na).
しずかな へや です。
Shizukana heya desu.
It is a quiet room.
きれいな はな を かいました。
Kireina hana o kaimashita.
I bought beautiful flowers.
ゆうめいな ひと です。
Yuumeina hito desu.
He is a famous person.
[!CAUTION] You ONLY use the “な” when the adjective is placed directly touching the noun it describes. If the adjective is at the end of the sentence before です, you DO NOT use “な”. Correct: へや は しずか です。 (The room is quiet). Incorrect: へや は しずかな です。
4. The Adverb Exception: The “に” Particle
If you glue a な-Adjective to a Noun, you use な. But what if you want to glue it to an action Verb to describe how you do something? In English, we add “-ly” (Quiet ➔ Quietly). In Japanese, you use the particle に (ni)!
しずかに ほん を よみます。
Shizuka ni hon o yomimasu.
I read the book quietly.
きれいに かきました。
Kirei ni kakimashita.
I wrote it beautifully/neatly.
Common な-Adjectives Vocabulary
| Word | Romaji | Meaning | Type |
|---|---|---|---|
| しずか | Shizuka | Quiet | な-Adj |
| にぎやか | Nigiyaka | Lively / Bustling | な-Adj |
| きれい | Kirei | Beautiful / Clean | な-Adj (Exception!) |
| ゆうめい | Yuumei | Famous | な-Adj (Exception!) |
| ひま | Hima | Free (time) / Not busy | な-Adj |
| げんき | Genki | Healthy / Energetic | な-Adj |
| べんり | Benri | Convenient | な-Adj |
| すき | Suki | Like / Fond of | な-Adj |
| きらい | Kirai | Dislike / Hate | な-Adj (Exception!) |
Conversation Practice
きょうと は どんな まち ですか。
Kyouto wa donna machi desuka?
What kind of city is Kyoto?
きょうと は とても きれいな まち です。
Kyouto wa totemo kireina machi desu.
Kyoto is a very beautiful city.
しずか ですか。
Shizuka desuka?
Is it quiet?
いいえ、しずか じゃありません。にぎやか です。
Iie, shizuka ja arimasen. Nigiyaka desu.
No, it is not quiet. It is lively.
とうきょう も にぎやか です か。
Toukyou mo nigiyaka desu ka?
Is Tokyo also lively?
はい、とうきょう も ゆうめい で にぎやかな まち です。
Hai, toukyou mo yuumei de nigiyakana machi desu.
Yes, Tokyo is also a famous and lively city.
Chapter Summary
- 1な-Adjectives function grammatically like nouns. They rely on the Copula (です/じゃありません/でした) to show tense.
- 2You ONLY use the particle 'な' when placing the adjective directly in front of the noun it modifies (e.g., しずかな へや).
- 3To turn a な-Adjective into an adverb (to modify a verb, like 'quietly'), use the particle 'に' (e.g., しずかに よみます).
- 4Beware the exception words! きれい, ゆうめい, and きらい end in the sound 'i', but they are strictly な-Adjectives.
Knowledge Check
Test your understanding of な-Adjectives!
Quiz
Which of the following is an accurate explanation of a な-Adjective?