Definition of "damnably"

I haue miſ-vs'd the Kings Preſſe damnably.

c. 1597 (date written), William Shakespeare, “The First Part of Henry the Fourth, […]”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act IV, scene ii], page 67

The people were in hopes he had killed the lawyers, and were damnably disappointed when they found he had only broke the leg o' the one, and the back of the other.

1759, Charles Macklin, Love a la Mode‎, act II

But I am blabbing damnably; come, tell me one little bit of the story, and I shall tell you the rest.

1826, Allan Cunningham, chapter V, in Paul Jones‎, volume II, Edinburgh: Oliver & Boyd, page 145

By the way: my dressing-gown smells most damnably of benzine.

1912, George Bernard Shaw, “Act II”, in Pygmalion‎

The young man was so damnably full of his experiences, so eager to compare one thing with another, so insistent upon foreign places and changes in England and what we'd all got to do about it.

1918, Hugh Walpole, The Green Mirror‎, New York: George H. Doran, Book I, Chapter VI, p. 109

And in his male spirit he felt himself hating her: hating her deeply, damnably.

1922, D. H. Lawrence, chapter XVIII, in Aaron's Rod, New York: Thomas Seltzer, page 307

They had just got me on to the stretcher when my paralysed right arm came to life and began hurting damnably.

1938 April, George Orwell [pseudonym; Eric Arthur Blair], chapter XII, in Homage to Catalonia, London: Secker & Warburg