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“abhorrently”
abhorrently (adverb); more abhorrently, most abhorrently
Regarding how intense disapproval or dislike of something is regarded: There was something abhorrently unacceptable and vulgar about Elsie's behavior at the party last night.
The supervisor's abhorrently despicable behavior after work was in contrast to his normally mild demeanor while he was working, which made his fellow workers think of him as a Dr. Jekyll and Mr. Hyde character.