The Meaning of いい in Japanese – It’s not just Good

The Japanese word いい is an i-adjective, primarily translating to "good" in English. However, depending on the context, it can convey different meanings and have different uses.

The Meaning of いい in Japanese

In this article, we’ll look at a few different usages for いい.

1. Good: The most common use of いい is to express the quality of being good or fine. For example, in the sentence これはいい本(ほん)です, it means "This is a good book".
2. Envious praise: While maintaining the meaning of “good,” here いい is used when praising others or expressing mild envy. It is often followed by ね or なあ. For example, 彼女(かのじょ)の服(ふく)、いいなあ “Her clothes (are so nice). I’m envious.”
3. Okay/Permitted: It can also express permission or acceptance.それはいいですか  "Is that okay?"
4. Better: When used in the past tense, it can mean "better". The past tense form is よかった. That may seem like a radical change from the humble いい, but it is incredibly useful and good to learn. For example, よかったね "I’m glad to hear that".
5. Enough/Sufficient: It can also imply adequacy and be used for refusing something. これでいい "That’s enough" or "This will do".
6. Get someone’s attention: いい is also often used to get the listener’s attention or to make sure the listener is focused before saying something important. This is pronounced with a rising tone and often followed by か or ね. For example, いいか、よく見(み)ててね “Listen up. Watch closely now.”

As you can see a single word like "いい" can have many different implications depending on how and where it's used.

Example Sentences using いい

Now, let’s go through a few example sentences. When learning a new grammar point or a word with multiple shades of meanings, examining, repeating, and memorizing example sentences or phrases can be an effective strategy to solidify our understanding.

その映画(えいが)はいい映画(えいが)だった。

That was a good movie.

いい天気(てんき)だね。

It's good weather, isn't it?

あの人(ひと)、英語(えいご)がペラペラ。いいなあ。

That person is fluent in English. I'm envious.

あの子(こ)の服(ふく)、いいなあ。

Her clothes, they're so nice. I'm envious.

出(で)かけてもいい?

Is it okay if I go?

このパン、食(た)べてもいいですか？

May I eat this bread?

風邪(かぜ)がなおってよかったね。

 I’m glad you got over your sickness.

家(うち)で勉強(べんきょう)した方(ほう)がよかった。

 It would have been better to study at home.

もういいよ。

That's enough.

これでいいの?

Is this enough?

いいか、よく見(み)てろよ。

Understand? Watch closely.

いいですか。今(いま)から行(い)きましょう。

Listen up. Let’s go now.

Other Common Expressions Using いい

いいから、早(はや)く行(い)きなさい。

“Never mind, just go quickly." or "Just go, don't argue.”

この曲(きょく)、いい感(かん)じだね。

This song has a good vide, doesn’t it?

今日(きょう)はいい天気(てんき)ですね。

Today has nice weather, don’t you think?