Learn Japanese grammar: くする (ku suru). Meaning: to make something ~.
Use with い-adjective
This pattern is used after an い-adjective and makes something whatever the adjective describes.
The い is replaced with く, turning it into an adverb.
- 大きい (ookii) big
- 大きくする (ookiku suru) make big
する can also be conjugated as:
- くします (ku shimasu) more polite
- くして (ku shite) please make
Use with な-adjective
To use with a な-adjective instead use にする (ni suru).

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くする - Example Sentences 例文
Each example sentence includes a Japanese hint, the romaji reading, and the English translation.
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Example #1
音楽でもっと良くする。
Example #2
あと500円安くしてくれたら、買いますよ。
Example #3
彼女は声を大きくした。
Example #4
電気をつけて、部屋を明るくしましょう。
Example #5
部屋が暑いので、エアコンをつけて涼しくします。
Example #6
運動をして、体を強くしましょう。
Example #7
このコーヒーは苦すぎるので、砂糖を入れて甘くします。
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