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Copy from Dictionary, hope it help!
Professional:
professional |pr??fe sh ?nl| adjective 1 [ attrib. ] of, relating to, or connected with a profession : young professional people | the professional schools of Yale and Harvard. 2 (of a person) engaged in a specified activity as one's main paid occupation rather than as a pastime : a professional boxer. having or showing the skill appropriate to a professional person; competent or skillful : their music is both memorable and professional. worthy of or appropriate to a professional person : his professional expertise. informal derogatory denoting a person who persistently makes a feature of a particular activity or attribute : a professional naysayer. noun a person engaged or qualified in a profession : professionals such as lawyers and surveyors. a person engaged in a specified activity, esp. a sport or branch of the performing arts, as a main paid occupation rather than as a pastime. a person competent or skilled in a particular activity : she was a real professional on stage. DERIVATIVES professionally |- sh ?nl-?| adverb
Thesaurus
professional adjective 1 people in professional occupations white-collar, nonmanual. antonym blue-collar. 2 a professional rugby player paid, salaried. antonym amateur. 3 a thoroughly professional performance expert, accomplished, skillful, masterly, masterful, fine, polished, skilled, proficient, competent, able, experienced, practiced, trained, seasoned, businesslike, deft; informal ace, crack, top-notch. antonym amateurish. 4 not a professional way to behave appropriate, fitting, proper, honorable, ethical, correct, comme il faut. antonym inappropriate, unethical. noun 1 affluent young professionals white-collar worker, office worker. antonym blue-collar worker. 2 his first season as a professional professional player, paid player, salaried player; informal pro. antonym amateur. 3 she was a real professional on stage expert, virtuoso, old hand, master, maestro, past master; informal pro, ace, wizard, whiz, hotshot, maven, crackerjack. antonym amateur.
Full-Timer:
noun, a person who does a full-time job.
From the above, it is easier to be a full timer, 8 words explaind all.