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

   www.merriam-webster.com › dictionary › challenge

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   Learn the various meanings and uses of the word challenge as a verb and a noun, with synonyms, examples, and word history. Find out how to challenge someone or something in different contexts and situations.

3. dictionary.cambridge.org › dictionary › englishCHALLENGE | English meaning - Cambridge Dictionary

   dictionary.cambridge.org › dictionary › english

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   Learn the meaning of challenge as a noun and a verb in English, with different senses and usage. Find out how to use challenge in sentences, expressions, and idioms with examples and synonyms.

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

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   Learn the meaning and usage of the word challenge as a noun, verb, and adjective. Find out the origin, history, and related words of challenge in English.

5. www.collinsdictionary.com › dictionary › englishCHALLENGE definition and meaning | Collins English Dictionary

   www.collinsdictionary.com › dictionary › english

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   A challenge is something new and difficult which requires great effort and determination.

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

   www.vocabulary.com › dictionary › challenge

   verb. take exception to. “She challenged his claims”. synonyms: dispute, gainsay. see more. challenge (somebody) to make good on a statement; charge with or censure for an offense. make the subject of dispute, contention, or litigation. noun. questioning a statement and demanding an explanation.

7. www.oxfordlearnersdictionaries.com › definition › englishchallenge noun - Definition, pictures, pronunciation and usage...

   www.oxfordlearnersdictionaries.com › definition › english

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   Learn the meaning, pronunciation and examples of the word challenge as a noun in English. Find out how to use challenge in different contexts, such as tasks, competitions, questions and statements.

8. www.thefreedictionary.com › challengeChallenge - definition of challenge by The Free Dictionary

   www.thefreedictionary.com › challenge

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   Learn the meaning and usage of the word challenge in different contexts, such as law, military, politics, and immunology. Find synonyms, antonyms, and related terms for challenge in the online thesaurus.