差さし越こえる

ichidan verb, transitive verb

go out of turn; butt in; skip ahead

Used when someone acts before their proper turn, ignoring the established order or queue. Often implies rudeness or presumption.

• 順じゅん番ばんを差さし越こえて先さきに注ちゅう文もんするのは失しつ礼れいだ。

  It's rude to go out of turn and order first.

• 彼かれはいつも会かい議ぎで人ひとの話はなしを差さし越こえて発はつ言げんする。

  He always butts in and speaks over others during meetings.