In a distressing manner; so as to cause distress(adverb)
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Use "distressingly" in a sentence
"This mutual orgasm is extremely important, but in distressingly many cases the man's climax comes so swiftly that the woman's reactions are not nearly ready, and she is left without it."
"She is what I call distressingly good; one doesn't want to be treated like a wild beast in a menagerie, and to be every now and then stirred up with a long stick. ""
"They’re realistic people who are damaged in distressingly recognizable ways, and Small is left to try and escape the generational cycle."