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1. Dictionary

   challenge

   /ˈtʃalɪn(d)ʒ/

   noun

   • 1. a call to someone to participate in a competitive situation or fight to decide who is superior in terms of ability or strength: "he accepted the challenge" Similar dareprovocationsummons
   • ▪ a task or situation that tests someone's abilities: "the traverse of the ridge is a challenge for experienced climbers" Similar problemdifficult tasktesttrialtroublebotherobstacle
   • ▪ an attempt to win a contest or championship in a sport: "he is desperate for a third world title challenge"
   • 2. a call to prove or justify something: "a challenge to the legality of the banning order" Similar confrontation withdispute withstand againsttest ofoppositiondisagreement withquestioning ofdefianceultimatum
   • ▪ a guard'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): "a certain number of jurors may be challenged"
   • ▪ (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. dictionary.cambridge.org › english › challengeCHALLENGE | English meaning - Cambridge Dictionary

   dictionary.cambridge.org › english › challenge

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   CHALLENGE definition: 1. (the situation of being faced with) something that needs great mental or physical effort in…. Learn more.

3. www.merriam-webster.com › dictionary › challengeChallenge Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › challenge

   • Cached

   1. : to dispute especially as being unjust, invalid, or outmoded : impugn. new data that challenges old assumptions. 2. a. : to confront or defy boldly : dare. he challenged his critics to prove his guilt. b. : to call out to duel or combat. challenged his rival to a duel. : to invite into competition. he challenged his brother to a tennis match.

4. www.vocabulary.com › dictionary › challengeChallenge - Definition, Meaning & Synonyms | Vocabulary.com

   www.vocabulary.com › dictionary › challenge

   A challenge is something that puts you to the test — like running your first marathon or reading War and Peace. Challenge, as a verb, is derived from a Latin word meaning "to accuse falsely," and it is still used much as it was in the 13th century, in the sense of questioning whether something is true or right.

5. www.collinsdictionary.com › english › challengeCHALLENGE definition and meaning | Collins English Dictionary

   www.collinsdictionary.com › english › challenge

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   A challenge is something new and difficult which requires great effort and determination. I like a big challenge and they don't come much bigger than this. The new government's first challenge is the economy. Synonyms: dare, provocation, summons to contest, wero [New Zealand] More Synonyms of challenge. 2. See to rise to the challenge.

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

   www.dictionary.com › browse › challenge

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

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

   www.oxfordlearnersdictionaries.com › definition

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   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.

8. 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.