English

Definition of expert adjective from the Oxford Advanced Learner's Dictionary

    

expert

 adjective
adjective
BrE BrE//ˈekspɜːt//
 
; NAmE NAmE//ˈekspɜːrt//
 
 
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 done with, having or involving great knowledge or skill to seek expert advice/an expert opinion an expert driver We need some expert help. expert (at/in something) They are all expert in this field. expert (at/in doing something) She's expert at making cheap but stylish clothes. compare inexpert Word Origin Middle English (as an adjective): from French, from Latin expertus, past participle of experiri ‘try’. The noun use dates from the early 19th cent. Compare with experience and experiment.Extra examples It’s a good idea to seek expert advice. Only a fully qualified doctor can give an expert opinion. She has expert knowledge of child psychology. She’s expert at making cheap but stylish clothes. They’re all expert in this field.
See the Oxford Advanced American Dictionary entry: expert

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