entrepreneur [entrepreneurs](person who organizes a risky activity of any kind and acts substantially in the manner of a business entrepreneur) noun [UK: ˌɒn.trə.prə.ˈnɜː(r)] [US: ˌɑːn.trə.prə.ˈnɝː]
go-getter(one who is motivated or inclined to excel) noun [UK: ˌɡəʊ ˈɡe.tə(r)] [US: ˌɡoʊ ˈɡe.tər]