inconceivably

comparative more inconceivably · superlative most inconceivably

1. In an inconceivable manner, in a way not believable or understandable.

   Then he warmed to it, and smoothly set out all his shifts, malices, and treacheries, his extreme boldnesses (he was desperate bold); his retreats, shufflings, and counterfeitings (he was also inconceivably a coward) […]

   1906, Rudyard Kipling, Puck of Pook's Hill

   1 more example

   Parents are at the cabin doors, dressing the hair of ragged children; shock-heads of girls peer out from the black circumference of smoke, and children inconceivably filthy, yell wildly and vociferously as the coach passes by.

   1872, William Makepeace Thackeray, The Irish Sketch-book, volume 2, page 160