[transitive] to tell a person in authority about a crime, an accident, an illness, etc. or about something bad that somebody has done report something (to somebody) Have you reported the accident to the police yet? a decrease in the number of reported cases of AIDS report somebody (to somebody) (for something/for doing something) She threatened to report him to the authorities for hunting without a licence. He's already been reported twice for arriving late. I’m going to report you if you do that again! report somebody/something + adj. She has reported her daughter missing.