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Definition of "challenge" [chal•lenge]

  • A call to engage in a contest, fight, or competition: a challenge to a duel. (noun)
  • An act or statement of defiance; a call to confrontation: a challenge to the government's authority. (noun)
  • A demand for explanation or justification; a calling into question: a challenge to a theory. (noun)
  • A sentry's call to an unknown party for proper identification. (noun)
  • A test of one's abilities or resources in a demanding but stimulating undertaking: a career that offers a challenge. (noun)
  • To invite or summon (someone to do something, esp to take part in a contest) (verb)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

  • To call (something) into question; dispute (verb)
  • To make demands on; stimulate (verb)
  • To order (a person) to halt and be identified or to give a password (verb)
  • To make formal objection to (a juror or jury) (verb)
  • To lay claim to (attention, etc) (verb)
  • (of a hound) to cry out on first encountering the scent of a quarry (verb)
  • To inject (an experimental animal immunized with a test substance) with disease microorganisms to test for immunity to the disease (verb)
  • A call to engage in a fight, argument, or contest (noun)
  • A questioning of a statement or fact; a demand for justification or explanation (noun)
  • A demanding or stimulating situation, career, object, etc (noun)
  • A demand by a sentry, watchman, etc, for identification or a password (noun)
  • An assertion that a person is not entitled to vote or that a vote is invalid (noun)
  • A formal objection to a person selected to serve on a jury (challenge to the polls) or to the whole body of jurors (challenge to the array) (noun)

www.Collinsdictionary.com (c) HarperCollins Publishers Ltd 2016

Use "challenge" in a sentence
  • "Now we are in the process of restructuring ISI� The present leadership of ISI is very clear that this challenge is our challenge� if there are opinions that need to be expressed, they should not be done through the media."
  • "I would make it a timed skill challenge, in which the players have to score [Number of players x 2] successes in three rounds (this is close enough to a complexity = [number of players] skill challenge*)."
  • "City beat Bayern with goals from David Silva in the 37th minute and Yaya Touré seven minutes after the break confirming the win, but Mancini must now lift his squad for the lesser European club competition while maintaining a title challenge in which they lead United by five points."