Pronunciation: (trem'yu-lus), [key]
1. (of persons, the body, etc.) characterized by trembling, as from fear, nervousness, or weakness.
2. timid; timorous; fearful.
3. (of things) vibratory, shaking, or quivering.
4. (of writing) done with a trembling hand.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.