The term 'compulsory threats' can be summarized as duresses, which is an 8-letter word. Duresses are a form of coercion, where one party threatens to inflict harm on another if they do not comply with their demands. This type of threat is often used in criminal activities, such as extortion or blackmail. It is also used in civil cases, such as contract disputes, where one party may threaten to take legal action against the other if they do not comply with the terms of the agreement.