To invite (someone) to take part in a competition.
We challenged the boys next door to a game of football.
To dare (someone).
To dispute (something).
to challenge the accuracy of a statement or of a quotation
To 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).
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.
Lacking some physical or mental attribute or skill ; used after adverbs to make politically correct adjectives.
mentally challenged
Used following adverbs to make adjectives in imitation of and mocking adjectives of this kind.
vertically challenged