a murderer (especially one who kills a prominent political figure) who kills by a treacherous surprise attack and often is hired to do the deed; "his assassins were hunted down like animals"; "assassinators of kings and emperors"
a member of a secret order of Muslims (founded in the 12th century) who terrorized and killed Christian Crusaders
a person engaged in one of the learned professions
an athlete who plays for pay
engaged in a profession or engaging in as a profession or means of livelihood; "the professional man or woman possesses distinctive qualifications"; "began her professional career after the Olympics"; "professional theater"; "professional football"; "a professional cook"; "professional actors and athletes"
characteristic of or befitting a profession or one engaged in a profession; "professional conduct"; "professional ethics"; "a thoroughly professional performance"
engaged in by members of a profession; "professional occupations include medicine and the law and teaching"
of or relating to a profession; "we need professional advice"; "professional training"; "professional equipment for his new office"
of or relating to or suitable as a profession; "professional organizations"; "a professional field such as law"