Doomster (noun)

A person who predicts or foretells unpleasant events or misfortune.

Origin:

Late 16th century. from the verb "doom", meaning "to declare the fate or judgment of".

Examples:

1. The doomster's prophecy of a great flood was widely disbelieved by the village.
2. The stock market plummeted, but the doomster had seen it coming.
3. Some saw the doomster as a harbinger of doom, while others saw him as a source of entertainment.
4. Despite his reputation as a doomster, the old man was actually a very kind and wise person.
5. The town was on edge as the doomster warned of a fire that would engulf the entire city.