professional adj.
1 connected with a job
VERBS be
ADV. purely, strictly He insisted that his relationship with the duchess was purely professional.
2 extremely skilled
VERBS be, look Their designs look very professional.
ADV. extremely, highly, really, truly, very He dealt with the problem in a highly professional way. | thoroughly | increasingly | almost | quite, rather
3 done as a paid job, not a hobby
VERBS be | become, turn
ADV. fully He wants to turn fully professional.
professional noun
ADJ. committed, dedicated, experienced | real, true This is the work of a real professional. | leading, senior, top a top golf professional | independent The survey should be performed by an independent professional. | fellow an actor revered by his fellow professionals | computer, health (care), medical | golf, tennis, etc. > Note at PROFESSIONAL
You can also check other dicts: professional (English, 中文解释 ), wordnet sense, Collins Definition