Enybody else want to be my friend

What effect does an author achieve b the language of the monstrous? y using words with strong connotations? how does this relate to

Something there is that doesn't love a wall, that sends the frozen-ground-swell under it, and spills the upper boulders in the sun; and makes gaps even two can pass abreast. the work of hunters is another thing: i have come after them and made repair where they have left not one stone on a stone, but they would have the rabbit out of hiding, to the yelping dogs. the gaps i mean, no one has seen them made or heard them made, but at spring mending-time we find them there. whom does the speaker blame for the gaps in the wall? himself his neighbor nature and hunters rabbits and dogs

If you broke your neighbors window, it would be nice to write an apology letter. which word might you use to express that you feel very sorry for the accident?