from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Marked by trembling, quivering, or shaking.
- adj. Timid or fearful; timorous.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Trembling, quivering, or shaking.
- adj. Timid, hesitant, or unconfident.
from the GNU version of the Collaborative International Dictionary of English
- adj. Shaking; shivering; quivering.
- adj. Affected with fear or timidity; trembling.
from The Century Dictionary and Cyclopedia
- Trembling; shaking; quivering; vibrating; unsteady.
- Lacking firmness, resolution, or courage; feeble; wavering; timid.
- In entomology, finely wavy: as, a tremulous line.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. (of the voice) quivering as from weakness or fear
From Latin tremulus, from tremere, to tremble.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin tremulus, from tremō ("I shake"). Compare with Greek τρέμω (trémō). (Wiktionary)