1. challenged
I challenged him to a game.
Developmental studies have challenged some accepted notions about neural organisations and learning
I challenged her for evidence.
My father's death from cancer challenged me to take up research on it.
The devil challenged God to a baseball game.
The new job challenged his skill.
When challenged to pronounce "shibboleth", Christopher Columbus did it in such a perfect way, that he was instantly recognized as the new leader of the natives' army.
I was challenged by a gatekeeper.
He got angry with whoever challenged him.
He challenged the mountain at the risk of his life.