A lot of thesaurus - A little bit dictionary

'challenge'

Overview of noun challenge
1. challenge -- (a demanding or stimulating situation; "they reacted irrationally to the challenge of Russian power")

2. challenge -- (a call to engage in a contest or fight)

3. challenge -- (questioning a statement and demanding an explanation; "his challenge of the assumption that Japan is still our enemy")

4. challenge -- (a formal objection to the selection of a particular person as a juror)

5. challenge -- (a demand by a sentry for a password or identification)


Overview of verb challenge
1. challenge, dispute, gainsay -- (take exception to; "She challenged his claims")

2. challenge -- (issue a challenge to; "Fischer challenged Spassky to a match")

3. challenge -- (ask for identification; "The illegal immigrant was challenged by the border guard")

4. challenge, take exception -- (raise a formal objection in a court of law)



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