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

  • noun Something, such as a game, toy, or problem, that requires ingenuity and often persistence in solving or assembling.
  • noun Something that baffles or confuses; an enigma.
  • noun The condition of being perplexed; bewilderment.
  • intransitive verb To baffle or confuse mentally by presenting or being a difficult problem or matter. synonym: perplex.
  • intransitive verb To clarify or solve (something confusing) by reasoning or study.
  • intransitive verb To be perplexed.
  • intransitive verb To ponder over a problem in an effort to solve or understand it.

from The Century Dictionary.

  • To perplex or pose with or as with difficult points, problems, or questions; put to a stand; gravel.
  • To entangle; make intricate.
  • To resolve or discover by long cogitation or careful investigation; make out by mental labor; cogitate: with out.
  • Synonyms Perplex, etc. (see embarrass), pose, nonplus, bewilder, stagger.
  • To be bewildered; be perplexed or posed.
  • noun A difficult question or problem; specifically, a riddle, or a toy or contrivance which is designed to try one's ingenuity.
  • noun Embarrassment; perplexity: as, to be in a puzzle, or in a state of puzzle.

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

  • noun Something which perplexes or embarrasses; especially, a toy or a problem contrived for testing ingenuity; also, something exhibiting marvelous skill in making.
  • noun The state of being puzzled; perplexity.
  • transitive verb To perplex; to confuse; to embarrass; to put to a stand; to nonplus.
  • transitive verb To make intricate; to entangle.
  • transitive verb To solve by ingenuity, as a puzzle; -- followed by out.
  • intransitive verb To be bewildered, or perplexed.
  • intransitive verb To work, as at a puzzle.

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

  • noun Anything that is difficult to understand or make sense of.
  • noun A game for one person that is more or less difficult to work out or complete.
  • noun A crossword puzzle.
  • noun A jigsaw puzzle.
  • noun A riddle.
  • verb transitive To perplex (someone).

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

  • verb be a mystery or bewildering to
  • noun a game that tests your ingenuity
  • noun a particularly baffling problem that is said to have a correct solution
  • verb be uncertain about; think about without fully understanding or being able to decide


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

[Origin unknown.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

Origin uncertain, originally pusle, possibly pose (“to perplex”) +‎ -le (“(frequentive, diminutive)”). The verb (1590s) “to perplex” seems to predate the noun “state of being perplexed” (circa 1600), “perplexing question” (1650s), “toy” (1814).


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