Doomsday vibes, also known as apocalyptic feelings, are often associated with a sense of impending doom or disaster. There are several synonyms that can be used to describe these feelings, depending on the context. Some of the most common synonyms for doomsday vibes include apocalyptic, ominous, bleak, foreboding, and ominous. Other words that can be used to describe these feelings include dark, forewarning, grave, and somber. These synonyms can be used to describe a variety of situations, such as the feeling of impending disaster during a natural disaster or the sense of unease that comes with a global crisis.