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challenge · noun /ˈtʃæl.ɪndʒ/Full view
Nouns: challenge, challenger
Adjectives: challenging
Verbs: challenge
challenge (DIFFICULT)
B1 C or U something that is difficult and that tests someone's ability or determination
Dictionary examples:

Finding a solution to this problem is one of the greatest challenges faced by scientists today.

You know me - I like a challenge.

It's going to be a difficult job but I'm sure she'll rise to the challenge.

Learner example:

I went with two friends from school, we had a big adventure there and we had to face many challenges. (Preliminary English Test; B1; Portuguese)

challenge (DISAGREEMENT)
C2 C an expression of disagreement with ideas, rules, or someone's authority
Dictionary example:

a challenge to the authority of the President

Learner example:

The one occasion in which Jack seems childish is when his challenge to Ralph's leadership fails and he weeps with humil[i]ation. (Certificate of Proficiency in English; C2; Portuguese)

challenge · verb T /ˈtʃæl.ɪndʒ/
Nouns: challenge, challenger
Adjectives: challenging
Verbs: challenge
challenge
B2 to express disagreement with ideas, rules, or someone's authority
Dictionary example:

Children challenge their parents' authority far more nowadays than they did in the past.

Learner example:

His daughter had just challenged him and he was struggling for a decision. (First Certificate in English; B2; German)

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