The Collaborative International Dictionary
Tremulous \Trem"u*lous\, a. [L. tremulus, fr. tremere to tremble. See Tremble.]
Shaking; shivering; quivering; as, a tremulous limb; a tremulous motion of the hand or the lips; the tremulous leaf of the poplar.
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Affected with fear or timidity; trembling.
The tender, tremulous Christian.
--Dr. H. More. [1913 Webster] -- Trem"u*lous*ly, adv. -- Trem"u*lous*ness, n.
Wiktionary
n. The property of being tremulous.
Usage examples of "tremulousness".
I needed to learn, from experts, that pure egotism that had always escaped me, for the little I had managed to build up, and which had so far only gone into my writing, was quickly vanquished by the sight of that tremulousness, that lost look in the eye, that disappointment that seemed to haunt me, to get in my way, even to obtrude on my consciousness, when I was busy building up my resources of selfishness.