cursefully

adverb2

1. •
   (old-fashioned) Peevishly; while cursing.

   • At the dock he communicated the interview to the gang, and amid the jeers of the shore workers, they cursefully hoisted sail and headed the vessel back to Port Anthony again. — 1922
2. •
   (no longer used) In a curseful manner; horrendously; horrifically.

   • Was not thou most curstfully madd to sever thy selfe from such an unequalde rarity? — 1604