PROFESSIONAL
professional
(adjective) 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”
professional
(adjective) characteristic of or befitting a profession or one engaged in a profession; “professional conduct”; “professional ethics”; “a thoroughly professional performance”
professional
(adjective) engaged in by members of a profession; “professional occupations include medicine and the law and teaching”
professional
(adjective) of or relating to a profession; “we need professional advice”; “professional training”; “professional equipment for his new office”
professional
(adjective) of or relating to or suitable as a profession; “professional organizations”; “a professional field such as law”
master, professional
(noun) an authority qualified to teach apprentices
professional, professional person
(noun) a person engaged in one of the learned professions
professional, pro
(noun) an athlete who plays for pay
Source: WordNet® 3.1
Etymology
Noun
professional (plural professionals)
A person who belongs to a profession
A person who earns their living from a specified activity
A reputation known by name
An expert.
Adjective
professional (comparative more professional, superlative most professional)
Of, pertaining to, or in accordance with the (usually high) standards of a profession.
That is carried out for money, especially as a livelihood.
(by extension) Expert.
Source: Wiktionary
Pro*fes"sion*al, a.
1. Of or pertaining to a profession, or calling; conforming to the
rules or standards of a profession; following a profession; as,
professional knowledge; professional conduct. "Pride, not personal,
but professional." Macaulay. "A professional sneerer." De Quincey.
2. Engaged in by professionals; as, a professional race; -- opposed
to amateur.
Pro*fes"sion*al, n.
Definition: A person who prosecutes anything professionally, or for a
livelihood, and not in the character of an amateur; a professional
worker.
Source: Webster’s Unabridged Dictionary 1913 Edition