Is it ensure, insure, or assure?
Old English dal "state of being divided; sharing, giving out," shortened from gedal "portion," related to dæl "deal," from Proto-Germanic *dailiz (cf. Old Frisian and Old Saxon del, Middle Dutch deil, Dutch deel, Old High German teil, German Teil). On the dole is 1920s.
"hand out charity," mid-15c., from dole (n.).