professional as in of or relating to or suitable as a profession
"a professional field such as law"
professional as in characteristic of or befitting a profession or one engaged in a profession
"a thoroughly professional performance"
professional as in of or relating to a profession
"we need professional advice"
"professional equipment for his new office"
professional as in engaged in by members of a profession
"professional occupations include medicine and the law and teaching"
professional as in a person engaged in one of the learned professions
professional person a person engaged in one of the learned professions
professional as in an athlete who plays for pay
pro in favor of a proposition, opinion, etc. ; in favor of (an action or proposal etc.); an athlete who plays for pay ; an argument in favor of a proposal
professional as in an authority qualified to teach apprentices
mastermost important element; be or become completely proficient or skilled in; get on top of; have dominance or the power to defeat over; have a firm understanding or knowledge of; an artist of consummate skill; a person who has general authority over others ; a combatant who is able to defeat rivals ; directs the work of others ; presiding officer of a school ; an original creation (i.e., an audio recording) from which copies can be made ; an officer who is licensed to command a merchant ship ; someone who holds a master's degree from academic institution ; an authority qualified to teach apprentices ; key that secures entrance everywhere