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1. Dictionary

   Chal·lenge

   /ˈCHalənj/

   

   noun

   • 1. a call to take part in a contest or competition, especially a duel: "he accepted the challenge" Similar dareprovocationsummons
   • ▪ a task or situation that tests someone's abilities: "the ridge is a challenge for experienced climbers" Similar problemdifficult tasktesttrialtroublebotherobstacle
   • ▪ an attempt to win a contest or championship in a sport: "a world title challenge"
   • 2. an objection or query as to the truth of something, often with an implicit demand for proof: "a challenge to the legality of the order" Similar confrontation withdispute withstand againsttest ofoppositiondisagreement withquestioning ofdefianceultimatum
   • ▪ a sentry's call for a password or other proof of identity: "I heard the challenge “Who goes there?”"
   • ▪ an objection regarding the eligibility or suitability of a jury member.
   • 3. the administration of an immunogenic or infectious agent to an animal or person, in order to study the resulting immune response or measure the efficacy of a vaccine: "challenge trials have yielded positive results when carefully and ethically conducted"

   verb

   • 1. invite (someone) to engage in a contest: "he challenged one of my men to a duel" Similar daresummoninvitebidthrow down the gauntlet todefy someone to do something
   • ▪ enter into competition with or opposition against: "the beauty industry as we know it is being challenged by a group of pioneers hoping to change the way we see our bodies"
   • ▪ make a rival claim to or threaten someone's hold on (a position): "they were challenging his leadership"
   • ▪ invite (someone) to do or say something that one thinks will be difficult or impossible: "I challenge the Minister to deny these accusations"
   • ▪ make demands on; prove testing to: "a new way of life that would challenge them" Similar testtaxtrystrainmake demands onwearywear outdrainsapstretchstimulatearouseinspireexcitespur on
   • 2. dispute the truth or validity of: "it is possible to challenge the report's assumptions" Similar questiondisagree withobject totake exception toconfrontdisputetake issue withprotest againstcall into questiondemur about/againstdissent frombe a dissenter from
   • ▪ object to (a jury member).
   • ▪ (of a guard) order (someone) to prove their identity: "the watchman did not challenge him"
   • 3. administer an immunogenic or infectious agent to an animal or person, in order to study the resulting immune response or measure the efficacy of a vaccine: "the mice were challenged with the influenza virus"

   Word Origin Middle English (in the senses ‘accusation’ and ‘accuse’): from Old French chalenge (noun), chalenger (verb), from Latin calumnia ‘calumny’, calumniari ‘calumniate’.

   Derivatives

   • 1. challengeable adjective

   Scrabble Points: 15

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2. www.dictionary.com › browse › challengeCHALLENGE Definition & Meaning | Dictionary.com

   www.dictionary.com › browse › challenge

   • Cached

   Challenge definition: a call or summons to engage in any contest, as of skill, strength, etc.. See examples of CHALLENGE used in a sentence.

3. www.oxfordlearnersdictionaries.com › us › definitionchallenge noun - Definition, pictures, pronunciation and ...

   www.oxfordlearnersdictionaries.com › us › definition

   • Cached

   a new or difficult task that tests somebody’s ability and skill. a tough/major/significant challenge. The role will be the biggest challenge of his acting career. She still faces many challenges (= has to deal with them). Destruction of the environment is one of the most serious challenges we face.

4. www.oxfordlearnersdictionaries.com › challenge_2challenge verb - Definition, pictures, pronunciation and ...

   www.oxfordlearnersdictionaries.com › challenge_2

   • Cached

   to question whether a statement or an action is right, legal, etc.; to refuse to accept something synonym dispute. challenge something His legal team immediately sought to challenge the decision. The story was completely untrue and was successfully challenged in court.

5. www.oxfordlearnersdictionaries.com › challenge_2challenge verb - Definition, pictures, pronunciation and ...

   www.oxfordlearnersdictionaries.com › challenge_2

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   Definition of challenge verb in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

6. www.thefreedictionary.com › ChallengeChallenge? - definition of Challenge? by The Free Dictionary

   www.thefreedictionary.com › Challenge

   • Cached

   1. a summons to engage in contest, as of skill or strength. 2. something that by its nature or character serves as a serious test: Space exploration offers a challenge to humankind. 3. a call to fight, as in a duel. 4. a demand to explain, justify, etc.

7. www.wordreference.com › definition › challengechallenge - WordReference.com Dictionary of English

   www.wordreference.com › definition › challenge

   • Cached

   a demand to explain, justify, etc.: a challenge to the treasurer to itemize expenditures. difficulty in a job or undertaking that is stimulating to one engaged in it. Military the demand of a sentry for identification or a countersign.

8. www.wordsmyth.netchallenge | Dictionaries and vocabulary tools for English ...

   www.wordsmyth.net

   • Cached

   a provocative or stimulating invitation to enter into a battle or other contest of skill. He accepted the man's challenge and prepared to duel with him. The champion has issued a challenge to all who seek to defeat him. synonyms: dare. similar words: defiance, gage, invitation, provocation, summons. definition 2: