Thoroughly investigate the truth of the incident.
徹
penetrate, clear, pierce, strike home, sit up (all night)
Kanji
Grade
Grade 8
Strokes
15 strokes
Radical
彳部
On'yomi (Chinese Reading)
テツ
Nanori (Name Reading)
あきら, いたる, おさむ, とお, とおる, ひとし, みち, ゆき
Common Readings
テツ
Example sentences
The detective cornered the suspect through a thorough investigation.
We will conduct a thorough investigation of the culprit.
Burglary cases are increasing in the neighborhood, so please make sure to lock your doors.
I stayed up all night yesterday to study for the exam.
He worked all night.
He decided to stick to being a behind-the-scenes supporter for the team.
He escaped the predicament with a cool-headed judgment.
The garrison continued to put up a thorough resistance until the end.
He stuck to his opinion from beginning to end.
Example Vocabulary
徹底的
thorough; exhaustive; complete
徹底
thoroughness; completeness; being consistent
徹夜
staying up all night
徹する
to pierce; to devote oneself; to stick to (a role)
冷徹
cool-headed; sharp insight; composed
徹夜明け
徹底抗戦
thorough resistance; fighting to the bitter end
徹頭徹尾
thoroughly; through and through; from beginning to end
夜を徹する
徹甲弾
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.