SubtleDagger

ter·ror
n.

1. Intense, overpowering fear.
2. One that instills intense fear: a rabid dog that became the terror of the neighborhood.
3. The ability to instill intense fear: the terror of jackboots pounding down the street.
4. Violence committed or threatened by a group to intimidate or coerce a population, as for military or political purposes.
5. Informal. An annoying or intolerable pest: that little terror of a child.

Also accepted are terrify and its variations (other than terrific).