morbidly

Etymology

morbid + -ly

adv

1. In a morbid manner, or to a morbid degree.
   In his reply he seemed less set against that plan than his past attitude would have led one to predict, but said he would like to hold off a little while longer—long enough to get his things in order and reconcile himself to the idea of leaving an almost morbidly cherished birthplace. 1931, H. P. Lovecraft, chapter 4, in The Whisperer in Darkness