How do you spell Tremble

Available Definitions:
1)  v. i. - To shake involuntarily, as with fear, cold, or weakness; to quake; to quiver; to shiver; to shudder; -- said of a person or an animal.
2)  v. i. - To totter; to shake; -- said of a thing.
3)  v. i. - To quaver or shake, as sound; to be tremulous; as the voice trembles.
4)  n. - An involuntary shaking or quivering.