プログレッシブ和英中辞典(第4版)の解説
かしつ【過失】
((make)) an error ((in))；a mistake ((about, in))
業務上過失
professional negligence
大きな［小さな］過失を犯す
make a gross [slight] mistake／commit a gross [slight] error
彼は自分の過失だと認めた
He admitted that 「it was his fault [he was to blame].
その殺人は過失か故意か決め手がない
There is no way of telling whether that killing was accidental or intentional.
過失傷害（罪）
accidental [unintentional] infliction of injury
過失致死（罪）
(an) accidental homicide; (an) involuntary manslaughter
業務上過失致死の疑いで逮捕された
He was arrested on suspicion of professional negligence resulting in death.
過失犯
criminal negligence