There are numerous synonyms for the word "deadly pale," which refers to a very pale or ashen complexion often associated with illness or death. One synonym is "ashen," which describes a pale color similar to ashes or dust. Another synonym is "ghostly," which suggests a pale or ethereal appearance associated with spirits. "Pallid" is another word often used, meaning a pale or sickly complexion. "Wan" is also a synonym, commonly used to describe a sickly or unnaturally pale appearance. Other synonyms for deadly pale include "cadaverous," "haggard," and "sallow." All of these words convey a similar meaning of a pale, sickly, or deathly appearance.