devilishly

Adverb

• (used as intensives) extremely
  • she was madly in love
    
  • deadly dull
    
  • deadly earnest
    
  • deucedly clever
    
  • insanely jealous
    

• in a playfully devilish manner
  • the socialists are further handicapped if they believe that capitalists are not only wicked but also devilishly clever
    

• as a devil; in an evil manner
  • his writing could be diabolically satiric
    

Related words

• Synonyms: 
  madly , insanely , deadly , deucedly , devilish , diabolically , fiendishly