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 OriginMiddle 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 expert in the Oxford Learner's Dictionary of Academic EnglishSee expert in the Oxford Advanced American Dictionary
