先さきを越こす

expression, godan verb (-su)

take the initiative; forestall; beat to the punch

Used when someone acts before another person, seizing an opportunity or advantage. Often implies a competitive or preemptive move.

• 彼かれに先さきを越こされて、いいアイデアを取とられてしまった。

  He beat me to the punch and took the good idea.

• ライバル会社がいしゃに先さきを越こされないように、早はやく新しん製せい品ひんを発はっ表ぴょうしよう。

  Let's announce the new product quickly so we don't get forestalled by our rival company.