رئيس

Etymology
-type stative-verb from the verb.

Noun

 * 1) boss, chief, leader
 * 2) director
 * 3) headmaster, principal
 * 4) chairman
 * 5) governor
 * 6) president
 * 7) manager, superintendent
 * 8)  conductor
 * 9)  captain

Adjective

 * 1) main, chief, leading