v. & n.
v.intr. 1 shake involuntarily from fear, excitement, weakness, etc. 2 be in a state of extreme apprehension (trembled at the very thought of it). 3 move in a quivering manner (leaves trembled in the breeze).
n. 1 a trembling state or movement; a quiver (couldn't speak without a tremble). 2 (in pl.) a disease (esp. of cattle) marked by trembling. all of a tremble colloq. 1 trembling all over. 2 extremely agitated. trembling poplar an aspen. tremblingly adv.
[ ME f. OF trembler f. med.L tremulare f. L tremulus TREMULOUS ]