事件|じけんjiken[1]atamadaka (head-high)

1. nounevent; affair; incident; case; plot; trouble; scandal
   この事件じけんに手てを貸かしてください。↗

   Give me a hand with this case.

• Synonym出来事できごとNeutralSomething that happens, e.g. 「不思議な出来事」. It carries no sense of severity; 「事件」 stresses a major or criminal event.
• Synonym件けんNeutralA single matter, or a counter, as in 「例の件」「三件」. Common in both speech and writing; 「事件」 stresses a major incident.
• SynonymことNeutralThe broadest word for a thing or matter, leaning abstract, e.g. 「大変な事になった」.
• SynonymインシデントNeutralLoanword for an unexpected incident, mostly in IT and security; it can also cover near-misses, i.e. anomalies or errors that stopped short of an accident.
• Related案件あんけんNeutralA matter to handle — an agenda item, project or court case, e.g. 「この案件」. Common in business talk; 「事件」 stresses a major incident.
• RelatedケースNeutralLoanword for a case or instance, as in 「ケースバイケース」; it can also mean a box or container.
• Related件けんNeutralA single matter, or a counter, as in 「例の件」「三件」. Common in both speech and writing; 「事件」 stresses a major incident.
• RelatedことNeutralThe broadest word for a thing or matter, leaning abstract, e.g. 「大変な事になった」.

Use 「事件」 by default for a major incident or criminal case. For ordinary happenings pick 「出来事」, for agenda items or projects 「案件」, for cases or instances 「ケース」, for a matter or counting 「件」, and for IT glitches 「インシデント」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 出来事できごと。
2. 重大じゅうだいな出来事できごとで、周囲しゅういに悪影響あくえいきょうを及およぼすもの。