madly

adverb

1. insanely or wildly: The old witch cackled madly.
2. with desperate haste or intensity; furiously: They worked madly to repair the bridge.
3. foolishly: They lived madly, wasting all their money.
4. extremely: They’re madly in love.

adverb

1. in an insane or foolish manner
2. with great speed and energy
3. informal extremely or excessivelyI love you madly

adv.early 13c., from mad (adj.) + -ly (2). Colloquial meaning “passionately” had emerged by 18c.