Translation guide
The English word 'unexpected' describes something that was not anticipated or foreseen. In Japanese, this concept is expressed through various adjectives, adverbs, and phrases that convey surprise, suddenness, or deviation from expectations. The choice depends on whether the focus is on the event itself, the speaker's reaction, or the manner in which something occurs.
To state that something was not expected or foreseen, often with a nuance of surprise.
An adjective meaning 'unexpected' or 'surprising'. It is used when something differs from what was assumed or predicted. Commonly used in both spoken and written Japanese.
It was unexpected that he quit.
Literally 'outside of expectation'. It emphasizes that something was beyond what was anticipated. Slightly more formal than 意外.
A noun meaning 'sudden' or 'unexpected', often used in the phrase 不意に (suddenly). It emphasizes the abruptness of the event.
To describe an action that occurs without warning or in a surprising manner.
To indicate that a situation or outcome is different from what was expected, often with a nuance of 'contrary to expectations'.
To express that one encountered something or someone by chance, without planning.
意外 (igai) is more subjective and often carries a nuance of personal surprise. 予想外 (yosougai) is more objective and emphasizes that something was beyond predictions or calculations. In many contexts they are interchangeable, but 予想外 can sound more formal.
Surprisingly, he agreed.
His reaction was completely unexpected.
An unexpected result came out.
予想外の出来事が起こった。
An unexpected event occurred.
An adjective meaning 'unexpected' or 'unforeseen', often with a nuance of something pleasant or fortuitous. It implies that the event was not even imagined.
I received an unexpected gift.
I was surprised by the unexpected visitor.
An adverb meaning 'suddenly' or 'unexpectedly'. It is used when something happens abruptly, often without any prior indication.
Suddenly, it started raining.
He unexpectedly left the room.
An adverb meaning 'suddenly' or 'without warning', often used in casual speech. It implies a lack of preamble or preparation.
He unexpectedly kissed me.
An adverb meaning 'unexpectedly' or 'suddenly', often used in written language. It emphasizes the surprise element.
I was unexpectedly spoken to from behind.
An adverb meaning 'unexpectedly' or 'contrary to expectations'. It is used when the reality differs from what was assumed, often in a neutral or slightly positive way.
The exam was unexpectedly easy.
An adverbial phrase meaning 'unexpectedly' or 'surprisingly'. It explicitly marks the unexpected nature of the statement.
Unexpectedly, he accepted the offer.
A conjunction meaning 'however' or 'but', used to introduce an unexpected turn of events. It sets up a contrast with the previous statement.
I thought he would come. However, unexpectedly, he didn't.
A noun or adverb meaning 'coincidence' or 'by chance'. It is used when something happens unexpectedly due to chance, not design.
I unexpectedly ran into an old friend in town.
An adverb meaning 'by chance' or 'unexpectedly'. It is casual and often used in spoken Japanese.
I happened to pass by and helped.
予想外の事態に備える。
Prepare for unexpected situations.
Avoid directly translating 'unexpected' as 期待されていない (kitai sarete inai), which means 'not hoped for' or 'not anticipated' in a different sense. Use the adjectives and adverbs listed above instead.
We had an unexpected visitor last night.