A more thorough explanation:

Definition: Oathworthy is an adjective used to describe someone who is legally capable of making an oath.

Example: In court, witnesses must be oathworthy in order to give testimony.

Explanation: Being oathworthy means that a person is considered trustworthy enough to make a solemn promise or declaration under oath. In legal settings, it is important that witnesses are oathworthy so that their testimony can be relied upon as truthful and accurate.