Definitions of beastly
  1. adjective
    resembling a beast; showing lack of human sensibility
    beastly desires”
    synonyms: bestial, brutal, brute, brutish
    lacking and reflecting lack of pity or compassion
  2. adjective
    very unpleasant
    synonyms: god-awful, hellish
    disagreeable to the senses, to the mind, or feelings
  3. adverb
    in a beastly manner
    “she behaved beastly toward her mother-in-law”
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