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"