Japanese

する

がいする
Meaning: to harm; to damage; to obstruct
Part of Speech: Verb

Listen to pronunciation

Show inflections Hide inflections

Verb inflections

Form Affirmative Negative
Present 害する 害しない
Polite 害します 害しません
Past 害した 害しなかった
Polite + Past 害しました 害しませんでした
Te-form 害して 害しなくて
Potential 害できる 害できない
Passive 害される 害されない
Causative 害させる 害させない
Imperative 害しろ 害するな

Handwriting

害
す
る

Example

Excessive dieting may harm your health.

Usage Notes

Used when something negatively impacts health, feelings, or a view.

Sottaku

About Sottaku

Sottaku is an app for learning Chinese, Japanese, Korean, English, Spanish, French, German, and Italian with a strong focus on SRS. It includes automatic flashcard creation for hundreds of thousands of words, grammar breakdowns in example sentences, language-specific study packs where available, adaptive quizzes, mobile apps, a browser extension, and community features. Give it a try now! All learning content is free with no limits on flashcards or study time.

Sottaku is built to match the habits of successful learners. By using Sottaku, you will naturally learn in the most efficient way possible, as proven by countless success stories in the language learning community.

Free Forever

Access all grammar guides, quizzes, and flashcards without paying a cent. Quality education should be accessible to everyone.

Smart SRS System

Our flashcard system uses the FSRS algorithm (also used in Anki) to optimize your review schedule and maximize retention.

Comprehensive Content

From hanzi, kana, hangul, and European vocabulary basics to grammar and reading practice where available, we have lessons for every level. Practice with quizzes tailored to your skill.

Community Chat

Ask level-appropriate questions and get help from the community. Learn together with fellow learners across all 8 supported languages.