A call to take part in a contest or competition, especially a duel. noun
He accepted the challenge to a chess match.
The knight issued a challenge to his rival.
A task or situation that tests someone's abilities. noun
Climbing Mount Everest is a significant challenge.
The project presented a challenge to the entire team.
An objection or query as to the truth of something, often with an implicit demand for proof. noun
The lawyer raised a challenge to the witness's testimony.
There was a challenge to the validity of the election results.
To invite someone to engage in a contest. verb
She challenged him to a race.
They challenged the other team to a rematch.
To dispute the truth or validity of something. verb
The scientist challenged the traditional theories.
He challenged the decision in court.