End; termination; coming to a close (a formal term used for disputes, negotiations, events, etc.).
長年続いた紛争がようやく終結した。
The long-running conflict has finally come to an end.
交渉は両者の合意により終結した。
The negotiations concluded with an agreement between both parties.
契約の終結条件を事前に確認しておく必要がある。
It's necessary to confirm the contract termination conditions in advance.