Devilship refers to a ship that is associated with evil or supernatural powers. However, there are several other synonyms that can be used to describe this term. Some of these synonyms include "demon vessel," "haunted ship," "ghostly galleon," "infernal barge," "diabolic vessel," and "hellish boat." Each of these synonyms invokes a sense of danger and intrigue and could be used to describe a ship that has a dark and malevolent history. These words can be particularly useful in creative writing or when telling spooky stories, as they can help to set the mood and create an atmosphere of mystery and foreboding.