all of a sudden
意味一覧 (2件)
突然
解説 Definition
何の前触れもなく突然に物事が起こる様子を表す表現。
All of a sudden means suddenly and unexpectedly. It is used when something happens very quickly without warning. This expression is common in spoken and written everyday English.
覚え方のコツ Memory Tip
このエントリでは all of a sudden を「突然」として覚えます。sudden は「急な、不意の」なので、出来事が前触れなくぱっと起こる場面を思い浮かべると定着します。All of a sudden, ... の形で文頭に置かれ、物語や会話で状況が切り替わる合図になります。基本義「急に」とかなり近いですが、ここでは日本語訳として少し硬めの「突然」に結びつけてください。
Start with `sudden`, meaning something quick and unexpected. Then `all of a sudden` feels like the whole situation changes at once. It often comes at the start of a sentence in stories: `All of a sudden, ...`.
例文
All of a sudden, the lights went out.
突然、明かりが消えた。
All of a sudden, it started raining heavily.
突然、激しく雨が降り始めた。
She was reading quietly when all of a sudden the phone rang.
彼女が静かに読書していると、突然電話が鳴った。
急に
(意味 2)解説 Definition
予告や準備の感じがないまま、物事が一気に起こるときに使う表現です。天気、音、気持ち、状況の変化など、日常の急な変化を話すときによく使われます。
All of a sudden means that something happens very quickly, without any warning or time to prepare. It is often used for sudden changes in weather, sounds, feelings, or situations in everyday life. This expression is common in conversation and often shows that the speaker feels surprised by the change.
覚え方のコツ Memory Tip
sudden は「急な」という意味なので、all of a sudden は「急な出来事が丸ごと起きる」感覚で覚えると自然です。文頭の All of a sudden, ... は物語や会話で場面が急に変わる合図になります。suddenly より少し会話的で、話し手が変化に驚いた感じも出ます。別エントリの「突然」と近いですが、ここでは日常的な「急に」の感覚に集中しましょう。
Remember that sudden means "quick and unexpected," so all of a sudden can feel like a whole sudden event arriving at one time. The pattern All of a sudden, ... is a common signal in stories and conversation that the scene changes quickly. It is a little more conversational than suddenly and often carries a feeling of surprise.
例文
All of a sudden, it started to rain heavily.
急に激しく雨が降り始めた。
I was feeling fine, and then all of a sudden I got really dizzy.
大丈夫だったのに、急にひどくめまいがした。
The room was quiet, but all of a sudden everyone began to laugh.
部屋は静かだったが、急にみんなが笑い始めた。
all of a sudden の語源・成り立ち Etymology
sudden は古フランス語経由でラテン語 subitaneus「不意の」にさかのぼり、all of a sudden は「一つの急な出来事まるごとで」という強調です。suddenly や suddenness も同根で、事態が不意打ちで一気に来る感覚から「突然」となります。
All of a sudden is built around "sudden," which came through Old French from Latin "subitaneus," meaning "unexpected" or "coming quickly." The full phrase adds emphasis, as if one abrupt event arrives all at once. Related forms such as "suddenly" keep that same idea of surprise and speed.
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