sinfully

/ˈsɪnfəli/
adverb
  1. In a morally wrong or wicked manner.
    • The dictator sinfully abused his power for personal gain.
    • She admitted she had sinfully broken her promise.
    • He sinfully ignored the needs of his own family.
  2. Used to emphasize that something is extremely indulgent, pleasurable, or excessive (often humorously).
    • They spent a sinfully long weekend lounging at a luxury resort.
    • The dessert was sinfully rich, with layers of cream and chocolate.
    • The dress was sinfully expensive, but she bought it anyway.
Antonyms
What does "sinfully" mean? | whatsthatwordmean | whatsthatwordmean