challenge in Japanese

The act of a sentry in halting a person and demanding the countersign, or (by extension) the action of a computer system demanding a password, etc.

A difficult task, especially one that the person making the attempt finds more enjoyable because of that difficulty.

A difficult task, especially one that the person making the attempt finds more enjoyable because of that difficulty.

(legal, rare) A judge's interest in the result of a case, constituting grounds for them to not be allowed to sit the case (e.g., a conflict of interest).