Undue influence

Improper pressure on a person resulting in them making a decision they wouldn’t have otherwise made.

Unsecured creditor

A creditor whose debt is not secured by any asset or property. If a deceased person leaves debts to be paid, unsecured creditors are low in order of priority.

Ultimate default clause

A back-stop measure in a Will that contains a gift to a class of beneficiaries (often charities) to prevent the Will from failing and the estate being distributed according to the intestacy rules.