challenge
noun
[ ˈtʃalɪn(d)ʒ ]
• 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 call to prove or justify something.
• "a challenge to the legality of the banning order"
• exposure of the immune system to pathogenic organisms or antigens.
• "recently vaccinated calves should be protected from challenge"
challenge
verb
• dispute the truth or validity of.
• "it is possible to challenge the report's assumptions"
Similar:
question,
disagree with,
object to,
take exception to,
confront,
dispute,
take issue with,
protest against,
call into question,
demur about/against,
dissent from,
be a dissenter from,
• invite (someone) to engage in a contest.
• "he challenged one of my men to a duel"
• expose (the immune system) to pathogenic organisms or antigens.
Origin:
Middle English (in the senses ‘accusation’ and ‘accuse’): from Old French chalenge (noun), chalenger (verb), from Latin calumnia ‘calumny’, calumniari ‘calumniate’.
