Tremble, v. i. [imp. & p. p. Trembled; p. pr. & vb. n. Trembling.]
Etymology: [F. trembler, fr. L. tremulus trembling, tremulous, fr. tremere to shake, tremble; akin to Gr. trimti. Cf. Tremulous, Tremor.]
1. To shake involuntarily, as with fear, cold, or weakness; to quake; to quiver; to shiver; to shudder; -- said of a person or an animal. I tremble still with fear. Shak. Frighted Turnus trembled as he spoke. Dryden.
2. To totter; to shake; -- said of a thing. The Mount of Sinai, whose gray top Shall tremble. Milton.
3. To quaver or shake, as sound; to be tremulous; as the voice trembles.
1 other Webster entry under this spelling
Tremble, n.
An involuntary shaking or quivering. I am all of a tremble when I think of it. W. Black.
Shades of meaning
Fernald has no entry of its own for tremble; he lists it under shake.
He lists it without comment; the entries above explain its neighbors.