くする

to make something, make it, adjective + する, turn up, turn down

AI-generated

Structure

[noun] + を + [i-adj 〜い → 〜く] + する

Description

くする means "make something" a certain way: you change the state of a thing on purpose. Take an い-adjective, swap the final い for く, and add する. The thing you change takes を.

。

I made the room brighter.

。

Please turn the TV down.

。

I had my hair cut short.

becomes , "make better". ×いくする is wrong.

する conjugates as usual: やすく安くした, おおきく大きくしないでください, あまく甘くしてほしい.

。

I lowered the price.

。

Please don't turn it up.

くする or くなる

くする is a change someone makes, with the thing changed marked by を. くなる is a change that happens, with the thing that changes marked by が.

。

I'll warm the room up.

。

The room gets warm.

× 部屋が暖かくする → 部屋を暖かくする

な-adjectives and nouns

A な-adjective or a noun takes にする in the same place: しずかに静かにする, "be quiet", きれいにする, "clean up".

。

I tidied the room.

Examples

。

Please turn the TV volume down.

。

I made the room brighter.

。

I want to make the coffee sweeter.

きごう？

Could you make the text bigger?

。

This store is keeping the prices low.

。

I cut my hair short.

。

Please don't turn the music up.

、。

It's cold, so I've warmed the room up.

。

Let's cool the room down with the air conditioner.

。

I made the soup too rich.

。

Could you make the explanation a little shorter?

、。

If you make the walls white, the room looks bigger.

References

Adjectives 形容詞imabi.org
にするBunpro

きっと

く / に