au·to·di·dact
noun/ˌɔːtəʊˈdaɪdækt/
/ˌɔːtəʊˈdaɪdækt/
(formal)- a person who has taught himself or herself something rather than having lessons
自学者；自修者 Word Originmid 18th cent.: from Greek autodidaktos ‘self-taught’, from autos ‘self’ + didaskein ‘teach’.