Translation guide
The English word 'unprecedented' describes something that has never happened or existed before. In Japanese, this concept is expressed through various adjectives, nouns, and set phrases depending on the context, such as historical events, personal experiences, or statistical extremes.
Describing an event, situation, or achievement that is the first of its kind in recorded history or memory.
A direct and common translation meaning 'without precedent'. Used for events or actions that have no prior example.
これは前例のない大災害だ。
This is an unprecedented catastrophe.
A formal, somewhat literary term meaning 'unprecedented' or 'unheard-of'. Often used in news or historical contexts.
未曾有の危機に直面している。
We are facing an unprecedented crisis.
Literally 'sky-before', meaning 'unprecedented' or 'record-breaking'. Often used in compounds like 空前絶後 (unprecedented and never to be repeated).
空前の大ヒットとなった。
It became an unprecedented blockbuster.
A more conversational way to say 'unprecedented', literally 'not existing until now'. Suitable for everyday speech.
これまでにない挑戦だ。
It's an unprecedented challenge.
Expressing that someone has never encountered a particular situation or feeling before.
Literally 'have never experienced'. Used to describe something personally unprecedented.
経験したことのない暑さだ。
It's heat like I've never experienced before.
Means 'first-time'. While not a direct translation of 'unprecedented', it conveys the idea of something never done before by the subject.
彼にとって初めての海外旅行だ。
It's an unprecedented overseas trip for him.
Emphasizing the extreme magnitude or level of something that surpasses all previous records.
Means 'largest in history' or 'biggest ever'. Commonly used for statistics, disasters, or achievements.
過去最大の赤字を計上した。
They posted an unprecedented deficit.
Literally 'highest in history'. Used for record-breaking highs.
史上最高の気温を記録した。
It recorded an unprecedented high temperature.
A four-character idiom meaning 'unprecedented and never to be repeated'. Very emphatic and somewhat dramatic.
空前絶後の大成功を収めた。
They achieved an unprecedented and unrepeatable success.
前例のない is the most neutral and widely applicable term for 'unprecedented'. 未曾有 is more formal and often used in news reports or solemn contexts. In casual conversation, これまでにない or 経験したことのない may sound more natural.
Direct translations like 前例のない can sound stiff in casual speech. Consider rephrasing with 初めての or これまでにない depending on the context.
その会社は前例のない成長を遂げた。
The company achieved unprecedented growth.
私たちは未曾有の出来事を目撃している。
We are witnessing an unprecedented event.