If you describe the amount or level of something as excessive, you disapprove of it because it is more or higher than is necessary or reasonable.
inordinate , undue , exorbitant
Their spending on research is excessive and is slowing developments of new treatments.
他们在研究上的花销过多,正在减缓新疗法的开发。
the alleged use of excessive force by police.
警察被指过度使用暴力。