/ˈfɪtnəs/ – noun
Definition: khả năng, thích hợp.
A more throughout explanation: Fitness, in a legal context, refers to the ability of an individual to meet the physical, mental, and emotional requirements necessary to perform a specific task or function. It may also refer to the state of being suitable or appropriate for a particular purpose or activity.
Example: The gym requires all members to sign a fitness waiver before using the facilities.