preferential; priority
Used to describe giving priority or favorable treatment to something over others. Often appears in compound phrases like 優先的に扱う (treat preferentially).
この案件は優先的に処理します。
We will handle this matter with priority.
優先的な対応が必要だ。
Preferential treatment is necessary.
Members are given preferential treatment.
Urgent matters are dealt with on a priority basis.
We offer seats on a priority basis to those who made reservations.