Translation guide
The English phrase 'plunge into' has two main meanings: physically jumping or diving into something (often water), and starting something suddenly or energetically. This guide covers natural Japanese expressions for both.
To physically jump, dive, or fall into water or another substance.
The most common and natural verb for jumping or diving into water. Can be used for intentional dives or sudden jumps.
To begin an activity, state, or situation abruptly and with full involvement.
Metaphorical extension of 'jump into'. Used with nouns like 新しい分野 (new field), 仕事 (work), etc. Conveys diving into something new or challenging.
彼は新しいビジネスに飛び込んだ。
He plunged into a new business.
Do not directly translate 'plunge into' as 落ちる (fall) or 沈む (sink) unless describing a literal sinking. For starting activities, 飛び込む is the most natural metaphorical equivalent.
飛び込む emphasizes the act of entering or starting something new, often with a sense of boldness. 没頭する focuses on the state of being deeply absorbed after starting. Use 飛び込む for the initial plunge and 没頭する for sustained immersion.
He plunged into the pool.
子供たちが川に飛び込んだ。
The children plunged into the river.
Literally 'jump at/onto', used when plunging onto something solid or into an embrace, not typically for water.
Not used for water; use 飛び込む for liquids.
彼女は彼に飛びついた。
She plunged into his arms.
Loanword from English 'dive', used in sports or casual contexts. Often implies a stylish or intentional dive.
彼はプールにダイブした。
He dove into the pool.
Means to thrust or plunge into something, often with force. Can be used for physical plunging into substances or situations, but has a nuance of recklessness or force.
彼は泥の中に突っ込んだ。
He plunged into the mud.
She plunged into the world of art.
Means to immerse oneself in something, to be absorbed. Focuses on deep involvement after starting. Often used for studies, hobbies, or work.
彼は研究に没頭した。
He plunged into his research.
Literally 'step into', used for making a decisive start, often after hesitation. Common for business ventures or life changes.
彼は起業に踏み切った。
He plunged into starting a business.
Means to rush into or enter suddenly, often used for phases, periods, or physical spaces. Implies a sudden transition.
国は混乱期に突入した。
The country plunged into a period of chaos.
A casual way to say 'suddenly start doing something'. Not a direct translation but captures the abruptness of plunging into an activity.
彼はいきなり歌い始めた。
He suddenly plunged into song.