challenging Meaning, Definition & Usage

1. verb take exception to
   challenge; gainsay; dispute.
   
   • She challenged his claims
2. verb issue a challenge to
   challenge.
   
   • Fischer challenged Spassky to a match
3. verb ask for identification
   challenge.
   
   • The illegal immigrant was challenged by the border guard
4. verb raise a formal objection in a court of law
   take exception; challenge.
   
5. adjective satellite requiring full use of your abilities or resources
   ambitious.
   
   • ambitious schedule
   • performed the most challenging task without a mistake
6. adjective satellite stimulating interest or thought
   thought-provoking.
   
   • a challenging hypothesis
   • a thought-provoking book
7. adjective satellite disturbingly provocative
   intriguing.
   
   • an intriguing smile

WordNet