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

  • noun A strange or eccentric person.

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

  • noun slang A strange, odd, eccentric person.
  • noun slang An insane, possibly dangerous person.

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

  • noun someone deranged and possibly dangerous
  • noun someone unpleasantly strange or eccentric


from Wiktionary, Creative Commons Attribution/Share-Alike License

From weird +‎ -o.


Help support Wordnik (and make this page ad-free) by adopting the word weirdo.



Log in or sign up to get involved in the conversation. It's quick and easy.

  • Wordie, scrambled

    August 1, 2007

  • Or not so scrambled.... ;->

    August 1, 2007

  • An apposite anagram, according to Mrs Yarb.

    March 18, 2008