from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A source of unnecessary or uncontrollable fear.
from The Century Dictionary and Cyclopedia
- n. A cause of terror; a terror.
Sorry, no etymologies found.
And why hasn't terriculament, "to inspire with groundless fear," been resurrected, given how often we've been terriculamented by the current administration in recent years?