verb
-lenges; -lenged; -lenging
[+ obj] to say or show that (something) may not be true, correct, or legal :dispute
to question the action or authority of (someone)
b law :to question whether (someone) should serve on a jury
to test the ability, skill, or strength of (someone or something) :to be difficult enough to be interesting to (someone)
to invite (someone) to compete in a game, fight, etc. - usually + to
to order (someone) to stop and prove who he or she is
noun
plural challenges
a difficult task or problem :something that is hard to do [count]
[count] :an action, statement, etc., that is against something :a refusal to accept something as true, correct, or legal - often + to
[count] an invitation to compete in a game, fight, etc.
an attempt to defeat someone in a competition
[count] :an order to someone to stop and say who he or she is