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

   www.wordreference.com › definition › challenge

   • Cached

   n. a call or summons to engage in any contest, as of skill, strength, etc. something that by its nature or character serves as a call to battle, contest, special effort, etc.: Space exploration offers a challenge to humankind. a call to fight, as a battle, a duel, etc.

3. premium-oxforddictionaries-com.libproxy.ucl.ac.ukchallenge - definition of challenge in English from the ...

   premium-oxforddictionaries-com.libproxy.ucl.ac.uk

   • Cached

   noun. 1a 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. More example sentences. Because of this idea of a competitive country, open to the biggest international challenges, I decided to be associated with the creation of A1 Team Portugal.

4. dictionary.cambridge.org › challengechallenge | English meaning - Cambridge Essential American

   dictionary.cambridge.org › challenge

   • Cached

   noun. us / ˈtʃæl·əndʒ/ B1. something difficult that tests your ability: Managing a large team is quite a challenge. an invitation to compete in a game or a fight. challenge. verb. us / ˈtʃæl·əndʒ/ present participle challenging | past tense and past participle challenged.

5. en.bab.la › dictionary › englishchallenge - Definition in English - bab.la

   en.bab.la › dictionary › english

   • Cached

   UK /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 a task or situation that tests someone's abilities the traverse of the ridge is a challenge for experienced climbers he took up the challenge of organizing a sports a...

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

   www.wordsmyth.net

   • Cached

   features: Word Combinations ( noun, verb ), Word Explorer, Grammatical Patterns. Word Explorer. See. behavior. The meaning of challenge. Definition of challenge. English dictionary and integrated thesaurus for learners, writers, teachers, and students with advanced, intermediate, and beginner levels.

7. dictionary.cambridge.org › challengechallenge | definition in the Cambridge Essential English ...

   dictionary.cambridge.org › challenge

   • Cached

   verb. uk. Your browser doesn't support HTML5 audio. / ˈtʃælɪndʒ/ challenging | challenged. to tell someone you do not accept their rules or you think they are wrong: The election results are being challenged. to ask someone to compete in a game or fight: He challenged me to a game of tennis.

8. dictionary.cambridge.org › thesaurus › challengeCHALLENGE - 29 Synonyms and Antonyms - Cambridge English

   dictionary.cambridge.org › thesaurus › challenge

   • Cached

   noun. These are words and phrases related to challenge. Click on any word or phrase to go to its thesaurus page. Or, go to the definition of challenge. He received a challenge to a duel. The champion issued a challenge to all other boxers to fight him. Synonyms. summons. dare. defiant. bid. hostile invitation. demand.