Definition of "effectually"

Though the captain had effectually demolished poor Partridge, yet had he not reaped the harvest he hoped for, which was to turn the foundling out of Mr Allworthy's house.

1749, Henry Fielding, chapter VII, in The History of Tom Jones, a Foundling, volumes (please specify |volume=I to VI), London: A[ndrew] Millar, […], book 2

Her quick eye detected the cause in a moment; Mr. Courtenaye had just entered the room, though he had not as yet perceived them. Indeed, the position in which Ethel stood effectually screened her from observation; and Henrietta thought she could not do better than stand as they were, thus giving her companion time to recover her outward composure.

1837, L[etitia] E[lizabeth] L[andon], Ethel Churchill: Or, The Two Brides. […], volume III, London: Henry Colburn, […], pages 9–10

They intrigued and slandered and hated each other only on that account, - but as to effectually lifting a little finger - oh, no.

1899 February, Joseph Conrad, “The Heart of Darkness”, in Blackwood’s Edinburgh Magazine, volume CLXV, number M, New York, N.Y.: The Leonard Scott Publishing Company, […], part I, page 214