overflood /ˌəʊvə(ɹ)ˈflʌd/verb 2noun 1forms 3 verb2 •To flood or fill completely; to overflow.He may be entirely fascinated by the actions on the stage and yet his mind may be overflooded with other ideas. — 1916 •(no longer used) To flood.On the 28th of March, the river overflooded the high pier along the Main, and rising higher and higher, began to come into the gates and alleys. — 1846 noun1 •A flood; an excess or superabundance. formsoverflooded · overflooding · overfloods