同どう慶けい

noun

mutual congratulation; shared rejoicing

Formal, somewhat literary noun used when both parties have reason to celebrate together. Often appears in set phrases like 同慶の至り.

• 両りょう国こくの友ゆう好こう関かん係けいの樹じゅ立りつは、まさに同どう慶けいの至いたりであります。