Quadruple VS
Synonym Boundary: "致す", "行う", "なさる", "〜てしまう"
All represent the core concept "do", but require precise selection.
Japanese Option A
致す
いたす (itasu)
N4 / CEFR
Japanese Option B
行う
おこなう (okonau)
N4 / CEFR
Japanese Option C
なさる
なさる (nasaru)
N4 / CEFR
Japanese Option D
〜てしまう
〜てしまう (te shimau)
N3 / CEFR
Quadruple VS Nuance Contrast & Social Differences
When expressing "do" in Japanese, you must carefully distinguish between "致す", "行う", "なさる", "〜てしまう" based on context.
- 致す (いたす (itasu) - Level: N4): Maps to "to do (humble form of する)" and is used when A very humble verb used for one's own actions. It's the humble equivalent of する.
- 行う (おこなう (okonau) - Level: N4): Maps to "to do, to conduct, to carry out, to perform" and is used when More formal than する. Typically used for conducting events, ceremonies, research, or official procedures..
- なさる (なさる (nasaru) - Level: N4): Maps to "to do (honorific form of する)" and is used when Honorific form of する.
- 〜てしまう (〜てしまう (te shimau) - Level: N3): Maps to "to do completely; to do regrettably/unintentionally" and is used when Expresses either the completion of an action, often implying 'finished doing,' or an action done unintentionally or regrettably. In casual speech, it's often shortened to 〜ちゃう/〜じゃう.
Context for "致す"
明日、私がご説明致します。
I will explain it tomorrow (humble).
Context for "行う"
今日は会議が行われる予定だ。
A meeting is scheduled to be held today.
Context for "なさる"
先生は何をなさいますか。
What will the teacher do?
Context for "〜てしまう"
大事な書類をなくしてしまいました。
I accidentally lost important documents.
Synonym Mastery Challenge
Which Japanese word perfectly fits this blank space?
Fill in the blank: "明日、私がご説明致します。" (Meaning: "I will explain it tomorrow (humble).")
🎉 Correct Answer!
Remember: "致す" is correct here because it represents "to do (humble form of する)" in the context: "I will explain it tomorrow (humble).".