challenge - definition and synonyms

verb [transitive] 

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present tense
present participlechallenging
past tensechallenged
past participlechallenged
  1. 1
    to question whether something is true, accurate, or legal

    No one has challenged the assumptions that are made in the report.

    This decision is likely to be challenged by the oil companies.

    challenge someone on something:

    They’re not likely to challenge us on any of the details.

    challenge someone to do something:

    We challenged the company to prove that its system was safe.

  2. 2
    to invite someone to compete or fight
    challenge someone to something:

    The girls challenged the boys to a cricket match.

  3. 3
    to test someone’s skill and abilities

    My present job doesn’t really challenge me.

    It is a problem that has intrigued and challenged me for many years.

  4. 4
    [usually passive] if you are challenged by someone, they ask you who you are and why you are in a particular place