The problem was only discovered after the fact.
The post-event response is important.
I apologize for reporting after the fact.
The contract was approved retroactively.
終了後 simply means 'after (something) ends', while 事後 is a more formal/legal term for 'after the fact' often used in phrases like 事後報告.
事後 is a formal term for 'after the fact,' often used in legal or procedural contexts, while 直後 simply means 'right after' an event in a neutral, everyday sense.
事前 means 'beforehand/prior', while 事後 means 'after the fact'; they form a common contrasting pair in formal writing.
judicial review without new evidence
corrective maintenance
corrective maintenance
post-incident handling; aftermath management; cleanup after an incident
ex-post analysis; post-hoc analysis
ex post facto report; report after the fact
accessory after the fact
ex-post-facto approval; retroactive consent
postcondition
Compound of 事 (matter, event) and 後 (after). The reading じご is the standard on'yomi combination.
posterior probability