welcome: [12] Old English had the greeting wilcume, which was a compound word formed from wil- ‘pleasure’ (ancestor of modern English will) and cume, a derivative of cuman ‘come’. From it was formed the verb wilcumian ‘welcome’. (German has the parallel wilkommen.) Then in the early Middle English period, due to the similarity of well and the influence of the parallel Old French greeting bienvenu (literally ‘well come’), it changed to welcome. => come, will[welcome etymology, welcome origin, 英语词源]