principal
principal - noun
the original amount of a debt on which interest is calculated
the educator who has executive authority for a school
an actor who plays a principal role
capital as contrasted with the income derived from it
(criminal law) any person involved in a criminal offense, regardless of whether the person profits from such involvement
the major party to a financial transaction at a stock exchange; buys and sells for his own account
principal - adjective
principal - thesaurus
chief
corpus
dealer
head
lead
main
master
primary
star