A more thorough explanation:

Term: vi aut clam
Definition: Vi aut clam means to do something by force or by stealth. It is a Latin term used in Roman law.
Examples: A thief who breaks into a house and steals something is doing it vi aut clam. Similarly, if someone uses physical force to take something from another person, it is also vi aut clam. These examples illustrate that vi aut clam refers to doing something without permission or by using force.