Loss of an item or document; something going missing and not being found.
昨日、駅で財布を紛失してしまいました。
I lost my wallet at the station yesterday.
紛失した書類は速やかに会社に報告してください。
Please report any lost documents to the company promptly.
荷物の紛失が相次いだため、空港で調査が行われた。
Because baggage losses occurred repeatedly, an investigation was conducted at the airport.