a. 发抖的, 战栗的, 胆小的

[医] 震颤的

[ adj ]
(of the voice) quivering as from weakness or fear
<adj.all>
the old lady's quavering voicespoke timidly in a tremulous voice

Tremulous \Trem"u*lous\, a. [L. tremulus, fr. tremere to
tremble. See {Tremble}.]
1. Shaking; shivering; quivering; as, a tremulous limb; a
tremulous motion of the hand or the lips; the tremulous
leaf of the poplar.

2. Affected with fear or timidity; trembling.

The tender, tremulous Christian. --Dr. H. More.
※ -- {Trem"u*lous*ly}, adv. --
{Trem"u*lous*ness}, n.