HomeTermsCompareFinance PrincipalThe definition for Principal:The sum of money outstanding upon which interest is payable. Also refers to one who is served by an agent. Private Mortgage Insurance (PMI): Insurance written by a private mortgage insurance company protecting the mortgage lender against loss occasioned by a mortgage default and foreclosure. Similar MatchesUndisclosed PrincipalUndisclosed PrincipalA principal whose identity is not revealed by an agent. Click to compare definitions of Principal Click to view definitions beginning pr |