Synonyms of the word

devilishly

• adv. In a devilish manner.

deadly

• adj. (obsolete) Subject to death; mortal.
• adj. Causing death; lethal.
• adj. Aiming or willing to destroy; implacable; desperately hostile.
• adj. (by extension) Very accurate (of aiming with a bow, firearm, etc.).
• adj. (informal) Very boring.
• adj. (informal) Excellent, awesome, cool.
• adv. (obsolete) Fatally, mortally.
• adv. In a way which suggests death.
• adv. Extremely.

deucedly

• adv. (degree, informal) Quite; extremely.

devilish

• adj. Resembling a devil.
• adj. Characteristic of a devil.
• adj. (informal) Extreme, excessive.
• adv. (informal) Devilishly.

diabolically

• adv. In a diabolical manner.

fiendishly

• adv. In a fiendish manner.

insanely

• adv. In an insane manner.
• adv. To a great degree; very much.

madly

• adv. In a mad manner; without reason or understanding; wildly.