'Mortally' definitions:

Definition of 'mortally'

From: WordNet
adverb
In such a manner that death ensues (also in reference to hatred, jealousy, fear, etc.); "a being of whom the forest Indians are said to be mortally afraid, with a hoof shaped like the heel of a bottle"

Definition of 'Mortally'

From: GCIDE
  • Mortally \Mor"tal*ly\, adv.
  • 1. In a mortal manner; so as to cause death; as, mortally wounded. [1913 Webster]
  • 2. In the manner of a mortal or of mortal beings. [1913 Webster]
  • I was mortally brought forth. --Shak. [1913 Webster]
  • 3. In an extreme degree; to the point of dying or causing death; desperately; as, mortally jealous. [1913 Webster]
  • Adrian mortally envied poets, painters, and artificers, in works wherein he had a vein to excel. --Bacon. [1913 Webster]