nightmarish

Definitions

Resembling or characteristic of a nightmare; extremely unpleasant, terrifying, or traumatic.

Difficult, chaotic, or stressful to an overwhelming degree.

Examples

The hikers faced a nightmarish ordeal when they became lost in the dense forest during a blizzard.

The transition from a peaceful life to a nightmarish reality happened almost overnight for the refugees.

Synonyms

horrific terrifying frightening ghastly harrowing dreadful macabre

Antonyms

pleasant delightful peaceful comforting serene idyllic agreeable