- insanely, crazily, dementedly, madly - in an insane manner; "she behaved insanely"; "he behaves crazily when he is off his medication"; "the witch cackled madly"; "screaming dementedly"
Antonyms: sanely
Derived from adjective insane1
- madly, insanely, deadly, deucedly, devilishly - (used as intensives) extremely; "she was madly in love"; "deadly dull"; "deadly earnest"; "deucedly clever"; "insanely jealous"