terrifying

Frightening or intimidating.

• terrifying creature
• terrifying dream

Of a formidable nature; terrific.

• Penguin colonies that number in millions; nights that run into days, and days that run into nights; katabatic winds that scream down the ice sheets at a terrifying 180 miles per hour, and then remain equally terrifyingly still.

present participle and gerund of terrifyform-ofgerundparticiple