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

  • noun An unintentional omission or mistake.
  • noun Watchful care or management; supervision.

from The Century Dictionary.

  • noun Superintendence; inspection; watchful care.
  • noun A mistake of inadvertence; an overlooking; omission; error.
  • noun Synonyms Supervision, inspection, control, direction, management, charge.
  • noun Inadvertence, etc. (see negligence), mistake, blunder, slip.

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

  • noun Watchful care; superintendence; general supervision.
  • noun An overlooking; an omission; an error.
  • noun rare Escape from an overlooked peril.

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

  • noun An omission; something that is left out, missed or forgotten.
  • noun supervision or management

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

  • noun management by overseeing the performance or operation of a person or group
  • noun a mistake resulting from inattention
  • noun an unintentional omission resulting from failure to notice something


from Wiktionary, Creative Commons Attribution/Share-Alike License

over- +‎ sight.


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  • Perilously close to an autantonym: the two opposing meanings are equally old, going back to the 1400s.

    March 26, 2009