from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adverb So that the upper or right side is down.
  • adverb In great disorder.
  • adverb Being or holding an asset that is worth less than its purchase price or the debt owed on it.

from the GNU version of the Collaborative International Dictionary of English.

  • adverb in such a manner that the part normally pointed upward is pointed downward; same as upsidown and upsodown.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adverb Inverted, so that the top is now at the bottom
  • adverb In great disorder
  • adjective Inverted; turned so that the top is at the bottom.
  • adjective finance Owing more money for something than it is worth; having negative equity.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adverb in an inverted manner


from The American Heritage® Dictionary of the English Language, 4th Edition

[Alteration of Middle English up so doun, up as if down : up, up; see up + so, as if; see so + doun, down; see down.]


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