急変|きゅうへんkyuuhen[0]heiban (flat)
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Definitions
- noun, suru verb, intransitive verbsudden turn; sudden change
- noun(suddenly occurring) accident; emergency
Conjugation
| Dictionary form | 急変する（きゅうへんする） |
|---|---|
| Polite (masu) | 急変します（きゅうへんします） |
| Negative (nai) | 急変しない（きゅうへんしない） |
| polite (masen) | 急変しません（きゅうへんしません） |
| classical zu / nu | 急変せず・急変せぬ（きゅうへんせず・きゅうへんせぬ） |
| Past (ta) | 急変した（きゅうへんした） |
| polite (mashita) | 急変しました（きゅうへんしました） |
| Past negative (nakatta) | 急変しなかった（きゅうへんしなかった） |
| polite (masen deshita) | 急変しませんでした（きゅうへんしませんでした） |
| Te form | 急変して（きゅうへんして） |
| Potential | 急変できる（きゅうへんできる） |
| Passive | 急変される（きゅうへんされる） |
| Causative | 急変させる（きゅうへんさせる） |
| Causative passive | 急変させられる（きゅうへんさせられる） |
| Conditional (ba) | 急変すれば（きゅうへんすれば） |
| tara | 急変したら（きゅうへんしたら） |
| Volitional | 急変しよう（きゅうへんしよう） |
| polite (mashou) | 急変しましょう（きゅうへんしましょう） |
| Imperative | 急変しろ（きゅうへんしろ） |
Common forms generated by rule; see the senses for honorific or irregular usage.
Synonyms & antonyms
- Synonym急転きゅうてんNeutralRefers to a sudden turn in how a situation develops, as in 「事態が急転する」; 「急変」 is the usual word for illness or weather.
- RelatedアクシデントNeutralColloquial loanword for an unexpected accident or sudden problem; stresses the element of surprise, and is not used for a change in an illness.
- Related異変いへんNeutralAn abnormal change or event, as in 「気候の異変」; the emphasis is on how strange or out of the ordinary it is.
- Related事故じこNeutralAn accident, especially a traffic accident; points to an unfortunate mishap rather than a sudden change of state.
- Related事変じへんWrittenWritten word for a major upheaval, also an armed conflict begun without a declaration of war, as in 「満州事変」; it implies an event of large scale.
- Related転変てんぺんWrittenWritten word for the way things change over time, as in 「有為転変」; stresses constant, unpredictable change rather than suddenness.
- Related変事へんじWrittenWritten word for an extraordinary event or calamity; it says that something abnormal has occurred, not how things changed.
- Related不虞ふぐWrittenWritten word for something unforeseen, mostly in the phrase 「不虞の事態」; rare and formal in tone.
- Antonym安定あんていNeutralAntonym: stability — a settled state with no major changes, the opposite of the abrupt shifts 「急変」 describes.
Use 「急変」 for sudden changes in illness, weather or attitude, as in 「容体が急変する」, and for sudden emergencies. For a sudden turn in a situation pick 「急転」, for an abnormal change 「異変」, and for an accident 「事故」. 「安定」 is the antonym.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only
Japanese definitions
Kanji in this word
