"monstrously" in the adverb sense
1. hideously, horridly, monstrously
in a hideous manner
"her face was hideously disfigured after the accident"
2. heinously, monstrously
in a terribly evil manner
"the child was heinously murdered"
3. grotesquely, monstrously
in a grotesque manner
"behind the house lay two nude figures grotesquely bald, with deliberate knife-slashes marking their bodies"
Source: WordNet® (An amazing lexical database of English)
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