Challenge

chalenge

(that which encourages someone to do something they otherwise would not)

chalenge

(difficult task)

challenge

(that which encourages someone to do something they otherwise would not)

défi

(that which encourages someone to do something they otherwise would not)

défi

(difficult task)

épreuve

(difficult task)

challenger

(to invite someone to take part in a competition)

défier

(to invite someone to take part in a competition)

défier

(to dare someone)

défier

(to write a final exam to get credit for a course)