say it: MAD-lee
madly is an adverb meaning "in an uncontrolled manner". It carries 3 recorded senses.
in an insane manner
“she behaved insanely”
“he behaves crazily when he is off his medication”
“the witch cackled madly”
“screaming dementedly”
(used as intensives) extremely
“she was madly in love”
“deadly dull”
“deadly earnest”
“deucedly clever”
“insanely jealous”
intensifier
Definitions, synonyms and semantic relations for madly come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.