Translation guide
The English adverb 'solely' means 'only' or 'exclusively,' often emphasizing that something is done for a single reason, by a single person, or with a single purpose. In Japanese, this concept is expressed through adverbs, particles, and set phrases that limit scope.
Expressing that something is limited to one thing, person, or reason, with no others involved.
A versatile particle meaning 'only' or 'just.' It attaches to nouns, verbs, and adjectives. It is the most common and neutral way to express 'solely.'
彼だけが知っている。
He alone knows.
私はただ真実だけを話した。
I spoke solely the truth.
A formal, written equivalent of だけ. Often used in official documents, literature, or formal speech. It can sound stiff in casual conversation.
本製品は日本国内のみで販売されています。
This product is sold solely within Japan.
A common pattern combining ただ (merely) with だけ to emphasize exclusivity. It translates to 'solely' or 'nothing but.'
彼はただ金だけが目的だ。
His sole purpose is money.
An adverb meaning 'simply' or 'merely.' Often used with だけ or のみ to reinforce the idea of 'solely.'
それは単に誤解に過ぎない。
That is solely a misunderstanding.
An adverb meaning 'exclusively' or 'wholly,' often used when an action is devoted to a single purpose. It can sound slightly formal or literary.
彼はもっぱら研究に専念している。
He devotes himself solely to research.
Emphasizing that an action is done with one specific motivation or goal.
A pattern meaning 'solely for the sake of ~.' It clearly states the exclusive purpose.
彼はお金のためだけに働いている。
He works solely for the money.
健康のためだけに運動している。
I exercise solely for my health.
Literally 'with only ~ as the reason.' It explicitly states that something is the sole cause.
彼が来なかったのは、天気だけが理由ではない。
The weather wasn't the sole reason he didn't come.
Indicating that something is done by one person alone, without help.
Means 'alone' or 'by oneself.' It is the most natural way to say that someone does something solely on their own.
彼女は一人でそのプロジェクトを完成させた。
She completed the project solely by herself.
A more formal term meaning 'independently' or 'solely.' Often used in business or official contexts.
その会社は単独で新市場に参入した。
The company entered the new market solely on its own.
だけ is the standard, everyday word for 'only.' のみ is its formal, written counterpart. In spoken Japanese, のみ can sound overly stiff or literary. Use だけ in most situations, and のみ in formal writing or speeches.
この部屋は女性だけです。
This room is for women only. (casual/neutral)
この部屋は女性のみです。
This room is for women only. (formal/written)
English 'solely' often corresponds to だけ or のみ, but directly translating it as 単独に or 唯一に can sound unnatural. Instead, use the patterns shown above depending on context.