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

  • n. A person or thing that cannot be known or understood; something unfathomable or puzzling.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A person or thing that cannot be easily understood; someone or something incomprehensible or puzzling.

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

  • n. something that baffles understanding and cannot be explained


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