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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.
a demand to explain, justify, etc.: a challenge to the treasurer to itemize expenditures.
difficulty in a job or undertaking that is stimulating to one engaged in it.
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challenge | Define challenge at Dictionary.com
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Challenge (literature) - Wikipedia


The American Library Association (ALA) defines a challenge to literature as an attempt by a person or group of people to have literature restricted or removed ...

challenge Definition in the Cambridge English Dictionary


challenge definition, meaning, what is challenge: (the situation of being faced with) something that needs great mental or physical effort…. Learn more.

Challenge | Define Challenge at Dictionary.com


Challenge definition, a call or summons to engage in any contest, as of skill, strength, etc. See more.

challenge (noun) definition and synonyms | Macmillan Dictionary


Define challenge (noun) and get synonyms. What is challenge (noun)? challenge (noun) meaning, pronunciation and more by Macmillan Dictionary.

challenge - definition of challenge in English | Oxford Dictionaries


Meaning, pronunciation, example sentences, and more from Oxford Dictionaries. ... 'the traverse of the ridge is a challenge for experienced climbers'. 'he took up ...

Challenge | Definition of Challenge by Merriam-Webster


Define challenge: to say or show that (something) may not be true, correct, or legal — challenge in a sentence.

challenge - Dictionary Definition : Vocabulary.com


Challenge, as a verb, is derived from a Latin word meaning "to accuse falsely," and it is still used much as it was in the 13th century, in the sense of questioning ...

challenge | meaning of challenge in Longman Dictionary of ...


challenge meaning, definition, what is challenge: something that tests strength, skill, or...: Learn more.