Wiktionary
adv. In a disheartening manner.
Usage examples of "dishearteningly".
Even today when, as rarely happens, I leave the settlement house to visit friends or acquaintances in Stockum or Lohhausen, between the airfield and the North Cemetery, and have to pass through streets of housing development which repeat themselves just as wearisomely and dishearteningly from house number to house number, from linden to linden, I am still on the way to visit Mahlke's mother and Mahlke's aunt and you, the Great Mahlke.
And it was cold out here, even now, and dry and dishearteningly bleak, and there were no walls.
Without the protective white covering, the scene was more repellent than before, the extent of the devastation more clearly and dishearteningly evident, and the stench of oil and charring more pungent and penetrating.