upside down /ˌʌpsaɪd ˈdaʊn/adjective 4adverb 2 adjective4 •Inverted; turned so that the top is at the bottom.The pattern resembled an upside down letter W. •In great disorder.The wenches and the men have been on the streets all day, and the kitchen is upside down. You never saw the like. — 1901 •Owing more money for something than it is worth; having negative equity.He's upside down on his mortgage. •(humorous) Australian. adverb2 •Inverted, so that the top is now at the bottom.The Union flag was flying upside down, a sign of danger. •In great disorder.The thief had turned the room upside down.
