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 ;

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 ;