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Phonetics
/ˈtʃæləndʒɪŋ/
verb
To invite (someone) to take part in a competition.
Example: We challenged the boys next door to a game of football.To dare (someone).
To dispute (something).
Example: to challenge the accuracy of a statement or of a quotationTo make a formal objection to a juror.
To claim as due; to demand as a right.
To censure; to blame.
To question or demand the countersign from (one who attempts to pass the lines).
Example: The sentinel challenged us with "Who goes there?"To object to the reception of the vote of, e.g. on the ground that the person is not qualified as a voter.
To take (a final exam) in order to get credit for a course without taking it.
noun
The act of making a challenge.
adjective
Difficult, hard to do.