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Definition of challenge
1a call to take part in a contest or competition, especially a duel:he accepted the challenge a task or situation that tests someone’s abilities:the ridge is a challenge for experienced climbers an attempt to win a contest or championship in a sport:a world title challenge 2an objection or query as to the truth of something, often with an implicit demand for proof:a challenge to the legality of the order a sentry’s call for a password or other proof of identity. Law an objection regarding the eligibility or suitability of a jury member. 3 Medicine exposure of the immune system to pathogenic organisms or antigens:recently vaccinated calves should be protected from challenge
verb [with object]
1invite (someone) to engage in a contest:he challenged one of my men to a duel enter into competition with or opposition against:incumbent Democrats are being challenged in the 29th district make a rival claim to or threaten someone’s hold on (a position):they were challenging his leadership [with object and infinitive] invite (someone) to do something that one thinks will be difficult or impossible; dare:I challenged them to make up their own minds test the abilities of:he needed something both to challenge his skills and to regain his crown as the king of the thriller 2dispute the truth or validity of:employees challenged the company’s requirement Law object to (a jury member). (of a sentry) call on (someone) for proof of identity. 3 Medicine expose (the immune system) to pathogenic organisms or antigens.
with a double l
.Drop the final silent -e
when adding endings that begin with a vowel: ( challenges, challenging,challenged)