“saiwai ni・saiwai ni mo”: Fortunately / Luckily [JLPT N2]
By Nihongo to Japan · Updated July 3, 2026
Expressing relief or gratitude at a fortunate outcome
“saiwai ni・saiwai ni mo”: Fortunately / Luckily
「幸いに（も）」 is an adverb meaning “fortunately, luckily, thankfully” — expressing relief at a good outcome. E.g. 「幸いにも、大事には至らなかった」 (fortunately, it didn't turn into anything serious). Separately, 「(verb) ば幸いです」 is a polite request/wish — “I'd be grateful if you would 〜”: 「ご連絡いただければ幸いです」 (I'd appreciate it if you could contact me).
🧠 Core nuance: relief that “luckily it didn't turn bad”
The core is relief at a good outcome: things could have been worse, but the result was good — leaving you relieved and grateful. It's common for narrow escapes, a silver lining (fortunately no one was hurt). The other use, 〜ば幸いです, is a polite expression of hope in business and letters (I'd be grateful if you could…), humble and courteous.
📌 Usage Overview
| Use | Nuance | Example |
|---|---|---|
| 幸いに（も）＋ good outcome | fortunately, thankfully | 幸いにも無事だった |
| 〜ば幸いです | (polite) I'd be grateful if 〜 | ご返信いただければ幸いです |
| 〜と幸いです | same | お役に立てると幸いです |
💬 Example Sentences
- 幸いにも、けが人は一人もいなかった。(Fortunately, no one was injured.) — relief
- 事故に遭ったが、幸い軽傷で済んだ。(I had an accident, but fortunately got off with minor injuries.) — silver lining
- ご連絡いただければ幸いです。(I'd be grateful if you could contact me.) — polite request
- 本書がお役に立てれば幸いです。(I'd be glad if this book is of help to you.) — humble hope
- 幸いにも天気に恵まれ、無事に開催できた。(Fortunately blessed with good weather, it was held without a hitch.) — luckily
🔄 Compare: 幸いに vs あいにく vs 運よく vs おかげで
| Expression | Nuance | Example |
|---|---|---|
| 幸いに（も） | “fortunately” (relief at a good outcome) | 幸いにも無事だ |
| あいにく | “unfortunately” (antonym, bad outcome) | あいにく満席だ |
| 運よく | “luckily” (more colloquial) | 運よく間に合った |
| 〜おかげで | “thanks to 〜” (gratitude to a cause) | 君のおかげで助かった |
⚠️ Common Mistakes
- Pairing with a bad outcome: ✗ 幸いにも事故が起きた → 幸いに pairs only with a good outcome (relief); for bad outcomes use あいにく.
- The setting for 「ば幸いです」: it's a written, business-style polite request; uncommon in casual speech.
- As a plain action adverb: ✗ 幸いに行く (just going) → 幸いに must pair with “a fortunate good outcome.”
- Antonym: the antonym of 幸いに is あいにく — don't misremember it.
💡 Nuance & When to Use
幸いに・幸いにも is an adverb for relief at a good outcome: for narrow escapes and silver linings (fortunately no one was hurt). Its tone carries gratitude and a sigh of relief. The other use, 〜ば幸いです, is a very practical, courteous business-letter way to express a hope/request (I'd be grateful if…). Master it (and its antonym あいにく) to express both relief and polite requests naturally. A must at N2.
🎯 JLPT Exam Tips
- Commonly tested at N2: 幸いに(も) = fortunately (with a good outcome); 〜ば幸いです (polite request).
- Antonym: 幸いに (fortunately) ⇔ あいにく (unfortunately).
- 「ば幸いです」 is a high-frequency business-letter courtesy.
🖊️ 練習題（5題）
Q1. 「___、大事には至らなかった。」（所幸沒釀成大事）
(A) 幸いにも (B) あいにく (C) わざわざ (D) せっかく
Q2. 「ご連絡いただければ___です。」（若能聯絡就太好了，委婉請求）
(A) 幸い (B) 残念 (C) 迷惑 (D) 心配
Q3. 「幸いにもけが人はいなかった」の意味は?
(A) 所幸沒有人受傷（慶幸）
(B) 可惜有人受傷
(C) 故意沒受傷
(D) 必須受傷
Q4. 「幸いに」の反義語は?
(A) あいにく（不巧／可惜）
(B) 運よく
(C) もちろん
(D) ぜひ
Q5. 用法が自然なのは?
(A) お役に立てれば幸いです。 (B) 幸いにも事故が起きた(悪い結果)。
(C) 幸いに行く(単純動作)。 (D) 幸いだ高い。
答案解析
1. (A) 幸いにも ── 所幸沒釀成大事。
2. (A) 幸い ── ば幸いです(委婉請求)。
3. (A) ── 所幸沒人受傷。
4. (A) あいにく ── 反義是あいにく。
5. (A) ── 「お役に立てれば幸いです」正確;(B)壞結果不該配幸いにも。