mortally

The word "mortally" is most often used to show a direct connection to death. In the clearest and most common sense, it means "fatally" or "in a way that will cause death." If a person is mortally wounded, mortally injured, or mortally ill, the condition is expected to end in death. In this sense, the word does not just suggest danger; it points to a fatal outcome. That is why it often appears in serious narrative writing, war stories, historical accounts, and formal reports.

It also has a figurative use. In older or more dramatic English, a person may be mortally offended, mortally afraid, or mortally certain, where the word adds force and gravity rather than literal death. In these cases, it usually means deeply, extremely, or in a way tied to human weakness and feeling. These examples are understandable to modern readers, but they are less common than the literal sense and can sound formal or literary.

There is one more shade of meaning tied to the adjective mortal, meaning "human" or "subject to death." Because of that background, mortally can sometimes suggest "as a mortal being" or "within human limits," though this use is rare in present-day English. Overall, the word belongs to a serious register. It is best understood first through phrases like mortally wounded, and then through its more dramatic figurative uses.