🦅 Project Eagle
Quadruple VS

Synonym Boundary: "閉じる", "密接", "精査", "肉薄"

All represent the core concept "close", but require precise selection.

Japanese Option A

閉じる

とじる (tojiru)
N4 / CEFR
Japanese Option B

密接

みっせつ (missetsu)
N2 / CEFR
Japanese Option C

精査

せいさ (seisa)
N2 / CEFR
Japanese Option D

肉薄

にくはく (nikuhaku)
N2 / CEFR

Quadruple VS Nuance Contrast & Social Differences

When expressing "close" in Japanese, you must carefully distinguish between "閉じる", "密接", "精査", "肉薄" based on context.
  • 閉じる (とじる (tojiru) - Level: N4): Maps to "to close (transitive); to shut" and is used when 本や目、傘などを閉める際に使います。ドアや窓には「閉める」を使うことが多いですが、お店を閉めるなどの場合にも使われます。.
  • 密接 (みっせつ (missetsu) - Level: N2): Maps to "close, intimate, inseparable, related" and is used when Describes a very close and strong relationship or connection between two or more things, often abstract concepts or phenomena. It implies an inseparable link..
  • 精査 (せいさ (seisa) - Level: N2): Maps to "close examination, careful investigation, scrutiny" and is used when Refers to examining something very carefully and thoroughly, often to find errors or inconsistencies, or to confirm accuracy. Used in formal contexts like auditing, reviewing documents, or scientific analysis..
  • 肉薄 (にくはく (nikuhaku) - Level: N2): Maps to "to close in on, to press hard, to nearly catch up with" and is used when Implies approaching someone/something very closely, often with a sense of pursuit, urgency, or intensity. Can be physical.
Mixing these up can easily lead to unnatural translations. Refer to the bilingual context cards below to master the boundaries!
Context for "閉じる"
私は疲れたので、目を閉じました。
I was tired, so I closed my eyes.
Context for "密接"
環境問題は私たちの生活に密接に関わっている。
Environmental issues are closely related to our daily lives.
Context for "精査"
提出された書類を精査する。
We will carefully examine the submitted documents.
Context for "肉薄"
彼はライバルに肉薄し、優勝争いを繰り広げた。
He pressed hard against his rival, engaging in a fierce competition for the championship.

Synonym Mastery Challenge

Which Japanese word perfectly fits this blank space?

Fill in the blank: "私は疲れたので、目を閉じました。" (Meaning: "I was tired, so I closed my eyes.")
🎉 Correct Answer!

Remember: "閉じる" is correct here because it represents "to close (transitive); to shut" in the context: "I was tired, so I closed my eyes.".

💡 Practice with AI! Live

Don't just read. Practice speaking this grammar with our interactive AI coach for free!

Try AI Speaking 👉