N5Chapter 15

Adjectives Part 2: な-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.
  • Understand the spirit of Omotenashi (Japanese hospitality).
N5 Context

In the previous chapter, we learned that い-Adjectives can conjugate themselves. But Japanese has a second group of describing words: な-Adjectives (na-adjectives). Grammatically, these words are actually Nouns! Because they act like nouns, they cannot change their own endings. Instead, they rely entirely on the Copula verb (です, じゃありません, でした) to do all the 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: Some な-Adjectives end in the sound “i” but are spelled with Kanji that hide it. The two most famous traps are きれい (Beautiful/Clean) and ゆうめい (Famous). Despite the “i” sound, these are strictly な-Adjectives!
Vocabulary6 terms

  • しずか

    な-Adj

    shizuka

    Quiet

  • にぎやか

    な-Adj

    nigiyaka

    Lively / Bustling

  • きれい

    な-Adj

    kirei

    Beautiful / Clean

  • ゆうめい

    な-Adj

    yuumei

    Famous

  • ひま

    な-Adj

    hima

    Free / Not busy

  • げんき

    な-Adj

    genki

    Healthy / Energetic

Example

この まち は しずか です。

Kono machi wa shizuka desu.

This town is quiet.
Example

たなかさん は とても げんき です。

Tanaka-san wa totemo genki desu.

Mr. Tanaka is very energetic.
Example

きのう は ひま でした。

Kinou wa hima deshita.

Yesterday I was free (not busy).

2. Conjugating with the Copula

Because な-Adjectives act like nouns, you just put them in the “A is B” sentence structure. The adjective root never changes. You only alter the です at the end.

Grammar Point
[Noun] は [な-Adjective] です／でした
MeaningStates a property using the copula.
Formation:
Noun + は + Adjective Root + Conjugated Copula
Examples (3)
Example

この へや は きれい です。

Kono heya wa kirei desu.

This room is clean.

Example

あした は ひま じゃありません。

Ashita wa hima ja arimasen.

Tomorrow I am not free.

Example

パーティー は にぎやか でした。

Pātī wa nigiyaka deshita.

The party was lively.
Example

にほんご は かんたん じゃありません。

Nihongo wa kantan ja arimasen.

Japanese is not easy.
Example

あの ひと は ゆうめい です か。

Ano hito wa yuumei desu ka.

Is that person famous?
Example

きょねん は びょうき でした。

Kyonen wa byouki deshita.

Last year I was sick.

3. Direct Noun Modification: The “な” Particle

When you place a な-adjective directly before a noun, you must use the particle な (na) to glue them together.

Grammar Point
[な-Adjective] ＋ な ＋ [Noun]
MeaningModifies a noun directly.
Formation:
Adjective Root + な + Noun
Examples (3)
Example

しずかな へや です。

Shizukana heya desu.

It is a quiet room.

Example

きれいな はな を かいました。

Kireina hana o kaimashita.

I bought beautiful flowers.

Example

ゆうめいな まち に いきます。

Yuumeina machi ni ikimasu.

I am going to a famous town.
Example

べんりな じしょ です ね。

Benrina jisho desu ne.

It's a convenient dictionary, isn't it?
Example

にぎやかな レストラン で たべました。

Nigiyakana resutoran de tabemashita.

I ate at a lively restaurant.
Example

げんきな こども です。

Genkina kodomo desu.

He is an energetic child.

4. Cultural Note: Omotenashi (おもてなし)

Omotenashi is often translated as “hospitality,” but its meaning goes much deeper. It represents a wholehearted concern for the guest’s needs, often anticipating them before the guest even realizes them.

  • Root: The word comes from omote (public face) and nashi (nothing), implying that service comes from the heart without any hidden agenda or expectation of a tip.
  • In Language: When you visit someone’s home, they might describe their preparation as benri (convenient) for you or ensure the room is shizuka (quiet) and kirei (clean).
  • Practice: It is seen in the way a taxi driver opens the door for you or how a shop clerk bows as you exit. It’s about providing a kirei (beautiful) and shizuka (peaceful) experience for every guest.

Conversation Practice

Talking About Cities
Alice

きょうと は どんな まち ですか。

Kyouto wa donna machi desuka?

What kind of city is Kyoto?

Tanaka

きょうと は とても きれいな まち です。 そして、 ゆうめい です。

Kyouto wa totemo kireina machi desu. Soshite, yuumei desu.

Kyoto is a very beautiful city. And it's famous.

Alice

しずか ですか。

Shizuka desuka?

Is it quiet?

Tanaka

はい、 しずかな ところ が たくさん あります。

Hai, shizukana tokoro ga takusan arimasu.

Yes, there are many quiet places.
Inviting a Friend
Ken

あした、 ひま です か。

Ashita, hima desu ka?

Are you free tomorrow?

Yumi

いいえ、 ひま じゃありません。 いそがしい です。

Iie, hima ja arimasen. Isogashii desu.

No, I'm not free. I'm busy.

Ken

そうですか。 ざんねん です ね。

Sou desu ka. Zannen desu ne.

I see. That's a shame.

Yumi

あさって は ひま です よ！

Asatte wa hima desu yo!

I'm free the day after tomorrow, though!

Chapter Summary

Key Takeaways
  • 1な-Adjectives function grammatically like nouns and use the copula (です/でした).
  • 2Use the particle な ONLY when placing the adjective directly before a noun.
  • 3Words like きれい and ゆうめい are な-Adjectives, despite ending in an 'i' sound.
  • 4Omotenashi is the spirit of selfless Japanese hospitality.
  • 5To describe 'how' an action is done (adverb), change な to に (e.g., shizuka ni - quietly).

Knowledge Check

Test your mastery of な-Adjectives!

Practice Quiz
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Quiz

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Which of these is a な-Adjective?