alibi; proof of being elsewhere
Common in crime, police, and mystery contexts. Typical phrases include アリバイがある, アリバイがない, アリバイを証明する, and アリバイが崩れる.
He has an alibi for the time of the crime.
The police checked her alibi.
He has an alibi for that night.
He proved his alibi with a friend's testimony.
His alibi fell apart because of new evidence.
The detective tried to break the suspect's alibi.