Ghastly (adjective)

1. Inspiring horror or loathing; repulsive.
2. Having an eerie, ghostly appearance.

Origin:

The word "ghastly" is derived from the old english word "gæstlic" which means "terrifying or terrifyingly wicked." it is also related to the word "ghast" which means "a ghost.".

Examples:

1. The ghastly image of the demon haunted his nightmares.
2. The old mansion had a ghastly appearance, with its broken windows and overgrown weeds.
3. The crime scene was ghastly, with blood splattered everywhere.
4. The ghastly expression on her face indicated that she was deeply disturbed.
5. He recoiled in horror at the ghastly sight of the rotting corpse.