円満

1. Origins, structure, and basic meaning

• Structure: 円満 (えんまん) describes a harmonious state without friction. 円満に modifies an act of resolution, while 円満な modifies the quality of a relationship.
• Basic usage: 問題を円満に解決した focuses on how a problem was resolved; 円満な関係を保つ describes the state maintained between two people.

2. Common pitfalls and similar expressions

• Resolving amicably and maintaining harmony
  • Adverbial 円満に scopes over 解決した; attributive 円満な scopes over 関係. One describes manner and the other a relationship's quality.