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

  • adj. Impossible to account for; inexplicable: unaccountable absences.
  • adj. Free from accountability; not responsible: an executive unaccountable to anyone but the president.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. inexplicable; unable to account for, or explain
  • adj. not responsible; free from accountability or control

from the GNU version of the Collaborative International Dictionary of English

  • adj. Not accountable or responsible; free from control.
  • adj. Not to be accounted for; inexplicable; not consonant with reason or rule; strange; mysterious.

from The Century Dictionary and Cyclopedia

  • Not to be accounted for; not explicable; not to be explained by reason or by the knowledge possessed; inexplicable; hence, strange.
  • Not subject to account or control; not subject to answer; not responsible.
  • Not to be counted; countless; innumerable.
  • Synonyms Mysterious.

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

  • adj. free from control or responsibility
  • adj. not to be accounted for or explained


from Wiktionary, Creative Commons Attribution/Share-Alike License

un- +‎ accountable



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