settle · finish

1. Origins, structure, and basic meaning

• Structure: 済 has 11 strokes and appears in words for completion or resolution.
• Basic usage: 済む is read すむ, and 使用済み is read しようずみ.

2. Common pitfalls and similar expressions

• Completion and sufficient means
  • 受付が済むまで means until registration is complete.
  • 小さな調整だけで済みました means that only a minor adjustment was needed to resolve the issue; what was sufficient comes before で.
• Already used
  • 使用済みの切符 is a used ticket. 済み in this word is read ずみ.