turn in
To give something to an official or teacher, to tell the police about someone, or to go to bed.
Meanings
To submit or hand over work, an object, or a document to a person in authority.
"All students must turn in their essays by Friday afternoon."
To report someone to the police or other authorities.
"His own brother turned him in after discovering what he had done."
(informal) To go to bed; to retire for the night.
"It's getting late — I think I'll turn in."
To achieve or produce a particular result or performance.
"She turned in an outstanding performance in the final."
Three distinct senses. The submission sense ('turn in homework') is common in North American English; British English often prefers 'hand in'. The reporting sense ('turn someone in') is used in crime/police contexts. The sleeping sense ('turn in early') is informal.
Commonly used with
Forms
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Synonyms
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