noun
remedial measure; settlement; dealing with the aftermath
A formal yojijukugo used for measures taken after a problem or incident to resolve the situation and prevent recurrence.
事故の善後処置を急いでいる。
We are hurrying to take remedial measures after the accident.
政府は災害の善後処置に追われた。
The government was busy dealing with the aftermath of the disaster.
事後処理 is a more general term for post-event processing or cleanup, while 善後処置 specifically implies corrective or remedial measures to make things right.
後始末 refers to cleaning up or settling affairs after something is over, often with a nuance of tidying up; 善後処置 is more formal and focused on remedial action.
A yojijukugo composed of 善後 (making things right after the fact) and 処置 (measures, handling). The irregular variant 前後処置 is considered a common mistake.