I can startle you awake, yet I am made of nothing tangible. What am I?

Category: Mystery · Difficulty: medium

Hint: Consider something that affects your sleep.

Answer

A nightmare

Explanation

Nightmares disturb sleep and create fear without physical form, unlike dreams.

This is a medium mystery riddle — a moderate challenge for most people. The answer is A nightmare.

More Mystery riddles

All Mystery riddles · Riddles with answers · Home