“ni shite” Meaning & Usage — “Even at…” / “Both A and B” [JLPT N1]

Content by NTJ Kuma · Nihongo to Japan editorial team · Updated July 27, 2026

“Ni shite” marks achieving something only at a certain point or level, or holding two roles at once — with examples and practice. (JLPT N1)

「彼は科学者にして作家だ」 — both a ～ and a ～, at ～ (only then)

To say someone “is both A and B,” or “only at some point／level did ～,” Japanese uses the literary 「にして」 — 「彼は優れた科学者にして、名高い作家でもある (he is both an excellent scientist and a renowned writer).」 「〜にして」 = both (A and B)／at some point・level (only then). This guide focuses on the two uses “AにしてB (both roles)” and “(a point・level) にして (only at ～),” cross-referencing the same-form 「にしてはじめて (only ～ can, see 〈にしてはじめて〉).」

Core: ① both A and B (AにしてB)／② at some point・level (only then)

「にして」 is a literary assertion; this guide focuses on two common uses:

①「AにしてB」 = both A and B, holding two roles／natures:

• 彼は医者にして、優れた画家でもある (he is both a doctor and an excellent painter).
• それは名誉にして、同時に重い責任でもある (that is both an honor and, at once, a heavy responsibility).

②「(a point・level・age) にして」 = at ～ (only then), at this point of ～:

• 十年の歳月にして、ようやく夢が叶った (after ten years, the dream was at last realized).
• 六十にして、彼は新たな挑戦を始めた (at sixty, he began a new challenge).

Feel: ① 「AにしてB」 = “simultaneously holding two roles／natures” (scientist and writer, honor and responsibility); ② 「(a point) にして」 = “at／after reaching ～ this point・level, (only then) ～” (realized only after ten years, began only at sixty). There's also the fixed 「一瞬にして (in an instant).」 It leans written, literary, solemn. In English: both A and B／at ～ (only then), at the time of ～. (For the same-form 「〜にしてはじめて = only ～ can,」 see 〈にしてはじめて〉.)

Forms & attachment

Examples in use

• モーツァルトは、天才にして努力の人でもあった。(Mozart was both a genius and a man of effort.)
• 結婚二十年にして、二人はますます仲がいい。(At twenty years of marriage, the two are closer than ever.)
• 彼女は一流の学者にして、優しい母親でもある。(She is both a first-rate scholar and a gentle mother.)
• その知らせは、一瞬にして街中に広まった。(That news spread through the whole town in an instant.)
• 齢七十にして、彼はなお現役だ。(At seventy, he is still active.)

⚠️ Easy traps to avoid

① 「AにしてB」 = both A and B (holding two roles／natures), flanked by nouns. This is a very typical use of 「にして.」 「(noun A) にして (noun B)」 = “both A and B／holding both A and B roles (natures)” — putting two roles, natures in parallel, for someone or something simultaneously holding both: 科学者にして作家 (both a scientist and a writer), 名誉にして責任 (both an honor and a responsibility), 母にして教師 (both a mother and a teacher). It stresses “being both at once, holding two facets.” Test: to say “(someone or something) is both A and B, holding both” → AにしてB.

② 「(a point・level・age) にして」 = at ～ (only then), at the time of ～. This is the other use. 「(age／years／point) ＋ にして」 means “at／after reaching ～ this point, level, (only then) ～,” often with the feeling “(after ～,) at last／only then ～”: 六十にして (at sixty), 十年にして (only after ten years), この年にして (only at this age): 五十にして天命を知る (at fifty I knew the will of heaven). Test: preceded by an age／point／years, for “at ～ only then, at the time of ～” → (a point) にして.

③ Its relation to 「にしてはじめて (only ～ can)」 — same form, different emphasis. 「にして」 also has the high-frequency use 「〜にしてはじめて = only ～ (this status／level) can (first) ～」 (プロにしてはじめて分かる = only a pro can grasp), stressing “it takes reaching a certain high level” (see 〈にしてはじめて〉). This guide's “AにしてB (both)” and “(a point) にして (at ～ only then)” are two other common facets of 「にして.」 All are 「にして」 (the literary assertion = である), differing only in emphasis: AにしてB = holding two roles; (a point) にして = at ～ only then; にしてはじめて = only ～ can. Test: two roles in parallel → AにしてB; an age／point → (a point) にして; “only ～'s level can” → にしてはじめて (see 〈にしてはじめて〉).

④ It's a written, literary, solemn expression; not used in everyday speech. 「にして」 is a written, literary, solemn expression, with an archaic, weighty feel, mostly for commentary, biography, solemn narration, aphorisms. Everyday speech doesn't use it — for “both A and B,” everyday uses 「AでもありBでもある」「Aであると同時にB,」 for “at ～ only then” 「〜になってやっと,」 not 「にして」 (too stilted). Test: to say in writing, solemnly “both A and B／at ～ only then” → にして (refined); for everyday → use でもある／〜になってやっと.

🔄 Nuance & comparison: にして (both)／にして (a point)／にしてはじめて／であると同時に

💡 The one thing to remember

「〜にして」 is a literary assertion; this guide focuses on two uses: ①「AにしてB」 = both A and B (holding two roles／natures) (科学者にして作家); ②「(a point・level・age) にして」 = at ～ (only then), at the time of ～ (六十にして, 十年にして, often with feeling). There's also 「一瞬にして (in an instant)」 and the high-frequency 「にしてはじめて (only ～ can, see 〈にしてはじめて〉).」 This 「にして」 has a real literary, solemn weight — 「天才にして努力の人」「五十にして天命を知る」 carry the weight of biography, aphorism. To say in writing, solemnly “both A and B” or “at ～ only then,” 「にして」 has the most flavor; for everyday speech, use 「でもある」「〜になってやっと.」

❓ Common questions

Q: What does 「科学者にして作家」 mean? How to read 「にして」 here?

「科学者にして作家」 = “both a scientist and a writer／holding both the scientist and writer roles.” This is 「にして」's “both” use. 「(noun A) にして (noun B)」 = “A, and at once B／holding both A and B roles (natures),” putting two roles, natures in parallel, for someone or something holding both at once. 「にして」 here is the literary assertion 「である (be)」, so 「AにしてB」 = 「AであってB (is A and is B)」 = “both A and B.” So: 科学者にして作家 = both a scientist and a writer, 名誉にして責任 = both an honor and a responsibility, 母にして妻 = both a mother and a wife. It's often to highlight someone simultaneously holding two (often admirable) roles or facets, with a solemn, admiring feel. Test: on seeing 「(noun A) にして (noun B),」 read it as “both A and B, holding both.” It's close to 「〜であると同時に,」 but 「にして」 is more literary, solemn (mostly for commentary, biography). ⚠️Note 「にして」 has other uses (see 〈にしてはじめて = only ～ can〉, (a point) にして = at ～ only then), told by context; but 「(noun A) にして (noun B),」 two nouns in parallel, is the “both” use.

Q: What's the difference between 「六十にして」 and 「六十歳で」?

The difference is ‘feel, weight.' 「(age) にして」 = at ～ (years) (literary, solemn, often with feeling): 「六十にして」 = “at sixty (only then／at the time of),” a literary, solemn phrasing, often with the feeling, weight “(after years,) at this age (only then) ～,” mostly for solemn narration, aphorisms: 五十にして天命を知る (at fifty I knew the will of heaven — an aphorism, solemn), 六十にしてなお挑戦を続ける (at sixty still continuing to challenge — with feeling, admiration). It gives a weighty, time-laden impression. 「六十歳で」 = at (the age of) sixty (neutral, plain): 「六十歳で」 just neutrally, plainly marks the age's time point, without special feeling or weight: 六十歳で定年退職した (retired at sixty — a neutral statement). Difference: 「(age) にして」 literary, solemn, with feeling (aphorisms, solemn narration); 「(age) で」 neutral, plain (just marking a time point). Test: to solemnly, with feeling say “at ～ (only then)” → にして (六十にして); to generally, plainly say “at the age of ～” → で (六十歳で). So the aphorism “at fifty I knew the will of heaven” uses 「五十にして,」 everyday “retired at sixty” uses 「六十歳で.」

🖊️ Practice Questions (5)

Q1. 「彼は若く___、すでに会社を成功させた。」（at such a young age）

(A) にして　(B) にしては　(C) として　(D) にとって

Q2. 「一夜にして」の意味は?

(A) Overnight (in an extremely short time)

(B) Took many nights

(C) Daytime

(D) Forever

Q3. 「学者にして音楽家」の意味は?

(A) Both a scholar and a musician

(B) A scholar, not a musician

(C) Wants to become a musician

(D) Scholars hate music

Q4. 「にして」と「にしては」の違いは?

(A) にして = only at the ~ stage / both ... and ...; にしては = for/considering ~ (yet)

(B) The two are exactly the same

(C) にして = contrary to expectation

(D) にしては = holding both roles

Q5. 用法が自然なのは?

(A) 70歳にしてマラソンに挑む。　(B) 70歳にしてはマラソン (wrong meaning)。

(C) 一夜にしてはの変化。　(D) 学者にしてを音楽家。

Answer Explanations

1. (A) にして ── Succeeded at such a young age.

2. (A) ── Overnight.

3. (A) ── Both a scholar and a musician.

4. (A) ── にして: only at the ~ stage; にしては: for/considering ~, yet.

5. (A) ── 「70歳にしてマラソンに挑む」 is correct.