alibi

An alibi is a claim (and the supporting evidence) that someone was elsewhere when a crime or incident took place, meant to show they weren’t at the scene. It's more than just saying "I didn't do it"; it's explaining where you were instead—and ideally backing that up. The word comes directly from Latin, where it literally translates to "elsewhere."

The strength of an alibi depends on verification. A simple statement may not convince anyone; it needs corroboration—witnesses, receipts, security footage, or anything that supports your claim. For example, "I have an alibi for last night: I was at a concert with hundreds of other people" is much stronger than "I was home alone."

Alibis are central to many legal dramas and detective stories. A weak or fabricated alibi can be a major plot point, often leading investigators closer to the truth. In Agatha Christie's novels, characters frequently construct elaborate alibis, only for Poirot to cleverly unravel them.

However, "alibi" isn't limited to criminal cases. You might jokingly say you need an "alibi" when the cookie jar is found empty—claiming you were in the other room the whole time! But in its formal sense, it's a serious legal term used to defend against accusations and establish innocence by proving absence from the scene of a crime.