The original amount of a debt on which interest is calculated.

The educator who has executive authority for a school:
— She sent unruly pupils to see the principal.

synonyms: head, head teacher, school principal.

Roget 694: director, manager, governor, rector, comptroller.    superintendent, supervisor, straw boss; intendant; overseer, overlooker^†; supercargo^†, husband, inspector, visitor, ranger, surveyor, aedile^†; moderator, monitor, taskmaster; master etc. 745; leader, ringleader, demagogue, corypheus, conductor, fugleman^†, precentor^†, bellwether, agitator; caporal^†, choregus^†, collector, file leader, flugelman^†, linkboy^†.    guiding star etc. (guidance) 693; adviser etc. 695; guide etc. (information) 527; pilot; helmsman; steersman, steermate^†; wire-puller.    driver, whip, Jehu, charioteer; coachman, carman, cabman; postilion, vetturino^†, muleteer, arriero^†, teamster; whipper in.    head, head man, head center, boss; principal, president, speaker; chair, chairman, chairwoman, chairperson; captain etc. (master) 745; superior; mayor etc. (civil authority) 745; vice president, prime minister, premier, vizier, grand vizier, eparch^†.    officer, functionary, minister, official, red-tapist^†, bureaucrat; man in office, Jack in office; office bearer; person in authority etc. 745.    statesman, strategist, legislator, lawgiver, politician, statist^†, statemonger^†; Minos, Draco; arbiter etc. (judge) 967; boss [U.S.], political dictator.    board etc. (council) 696.    secretary, secretary of state; Reis Effendi; vicar etc. (deputy) 759; steward, factor; agent etc. 758; bailiff, middleman; foreman, clerk of works; landreeve^†; factotum, major-domo^†, seneschal, housekeeper, shepherd, croupier; proctor, procurator.    ... show more

Polish: dyro

An actor who plays a principal role.

synonyms: lead, star.

Dutch: hoofdrolspeler

Capital as contrasted with the income derived from it.

synonyms: corpus, principal sum.

Dutch: corpus, corpus delicti

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.

synonym: dealer.

Most important element:
— The principal rivers of America.
— The principal example.

synonyms: chief, main, master, primary.

Roget 642: important; of importance etc. n.; momentous, material; to the point; not to be overlooked, not to be despised, not to be sneezed at; egregious; weighty etc. (influential) 175; of note etc. (repute) 873; notable, prominent, salient, signal; memorable, remarkable; unforgettable; worthy of remark, worthy of notice; never to be forgotten; stirring, eventful.    grave, serious, earnest, noble, grand, solemn, impressive, commanding, imposing.    urgent, pressing, critical, instant.    paramount, essential, vital, all-absorbing, radical, cardinal, chief, main, prime, primary, principal, leading, capital, foremost, overruling; of vital importance &c.. in the front rank, first-rate; superior etc. 33; considerable etc. (great) 31; marked etc. v.; rare etc. 137.    significant, telling, trenchant, emphatic, pregnant; tanti [Lat.].    ... show more

Polish: główny, generalny, kapitalny