Kanji

牢

牢

prison, jail, hardness

Kanji

Grade

Secondary School

Strokes

7 strokes

Radical

牛部

On'yomi (Chinese Reading)

ロウ

Kun'yomi (Japanese Reading)

かたい, ひとや

Example sentences

牢 ろう
その 男 は 重い 罪 を 犯し 、 牢 に 入れられた 。

That man committed a serious crime and was put in prison.

牢獄 ろうごく
彼 は 無実 の 罪 で 十年 間 も 牢獄 に 閉じ込められていた 。

He was confined in prison for ten years for a crime he didn't commit.

牢屋 ろうや
無実 の 罪 で 、 彼 は 牢屋 に 入れられた 。

He was thrown into prison for a crime he did not commit.

堅牢 けんろう
その 要塞 は 極めて 堅牢 に 作られていた

The fortress was built to be extremely durable.

Example Vocabulary

牢

ろう

prison; jail; cell

牢獄

ろうごく

prison; jail

牢屋

ろうや

prison; jail

地下牢

ちかろう

堅牢

けんろう

solid; durable; robust; strong

牢番

ろうばん

座敷牢

ざしきろう

牢人

ろうにん

水牢

みずろう

牢名主

ろうなぬし

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 Sign Up

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.