herculean
Her.cu.le.an \.h*r-ky*-'le--*n, .h*r-'kyu:-le--\ aj 1: of, relating to, or characterisitic of Hercules often cap 2: of extraordinary power, size, or difficulty
Webster's English DictionaryHer.cu.le.an \.h*r-ky*-'le--*n, .h*r-'kyu:-le--\ aj 1: of, relating to, or characterisitic of Hercules often cap 2: of extraordinary power, size, or difficulty