slip-up

名词 slip-up:

1. a minor inadvertent mistake usually observed in speech or writing or in small accidents or memory lapses etc.
   同义词：slip, miscue, parapraxis

动词 slip-up:

1. make an error
   同义词：stumble, slip up, trip up

1. Leaving his name off the list was a bad slip-up.
   名单上没有他的名字是个严重的疏忽。