ownsome adjective 1noun 1forms 3 adjective1 •Marked by possession, ownership, or belonging; proper.Ranging somebody else's ownsome ground, Lacking somebody else's thrill, Haunting somebody else's too profound, Just a-ghosting for somebody else! — 1939 noun1 •(informal) One's own; one's lonesome.Am I going to have to go there on my ownsome? formsownsomes · more ownsome · most ownsome