beginyoudaoicibaDictYouDict[begin 词源字典]
begin: [OE] Begin comes from a prehistoric West Germanic compound verb *biginnan, which also produced German and Dutch beginnen; the origin of the second element, *ginnan, is not known for certain. The form gin was common in the Middle Ages and up until about 1600; this was a shortening, perhaps not so much of begin as of the now obsolete ongin ‘begin’, which was far more widespread than begin in Old English.
[begin etymology, begin origin, 英语词源]
begin (v.)youdaoicibaDictYouDict
Old English beginnan "to begin, attempt, undertake," a rare word beside the more usual form onginnan (class III strong verb; past tense ongann, past participle ongunnen); from bi- (see be-) + West Germanic *ginnan, of obscure meaning and found only in compounds, perhaps "to open, open up" (compare Old High German in-ginnan "to cut open, open up," also "begin, undertake"), with sense evolution from "open" to "begin." Cognates elsewhere in Germanic include Old Frisian biginna "to begin," Middle Dutch beghinnen, Old High German beginnan, German beginnen, Old Frisian bijenna "to begin," Gothic duginnan.