expression, godan verb (-su)
go too far; overdo; exceed reasonable limits
Used when someone's actions, words, or behavior cross the line of what is acceptable or appropriate. Often implies a negative judgment.
See also: 度を過ごす
冗談でも度を越すと相手を傷つける。
Even if it's a joke, if you go too far you'll hurt the other person.
彼のいたずらは度を越している。
His pranks have gone too far.