Monster (noun)

1. A mythical or legendary creature, typically fearsome and powerful.
2. A person or thing of inhuman size or quality.
3. A cruel or evil person or thing.

Origin:

Middle english: from old french monstre, from latin monstrum 'portent, monster', from monēre 'warn', from monere 'to remind'.

Examples:

1. The monster was said to live in the depths of the lake.
2. His cruelty made him a monster in the eyes of the villagers.
3. The new movie features a giant monster that terrorizes the city.
4. She was a monster of vanity, always looking in the mirror.
5. The monster of poverty still haunts many parts of the world.