1. Documents, data, or information that are not formally recognized or authenticated by an official authority or organization
The unofficial records show that the company's actual profits were much higher than reported.
Os registros não oficiais mostram que os lucros reais da empresa foram muito maiores do que reportado.
2. Achievements or statistics that are notable but not formally recognized by the governing body or institution
He holds the unofficial record for the fastest marathon time in the city.
Ele detém o recorde não oficial para o tempo de maratona mais rápido da cidade.