The Collaborative International Dictionary of English v.0.48:

Quiver \Quiv"er\, v. i. [imp. & p. p. Quivered
   (kw[i^]v"[~e]rd); p. pr. & vb. n. Quivering.] [Cf.
   Quaver.]
   To shake or move with slight and tremulous motion; to
   tremble; to quake; to shudder; to shiver.
   [1913 Webster]

         The green leaves quiver with the cooling wind. --Shak.
   [1913 Webster]

         And left the limbs still quivering on the ground.
                                                  --Addison.
   [1913 Webster]

WordNet (r) 3.0 (2006):

quivering
    n 1: a shaky motion; "the shaking of his fingers as he lit his
         pipe" [syn: shaking, shakiness, trembling, quiver,
         quivering, vibration, palpitation]
    2: the act of vibrating [syn: vibration, quiver,
       quivering]

Moby Thesaurus II by Grady Ward, 1.0:

109 Moby Thesaurus words for "quivering":
   aflicker, agitated, ague, all shook up, all-overish, anxious,
   apprehensive, aquiver, aspen, bickering, blinking, bumpiness,
   chattering, chorea, cold shivers, dance, dancing, didder, disquiet,
   disquietude, dithers, fidgetiness, fidgeting, fidgets, fidgety,
   fits and starts, flashing, flicker, flickering, flickering light,
   flickery, flicky, flutter, fluttering, fluttery, glancing light,
   heaving, in a quiver, in suspense, inquietude, jactation,
   jactitation, jerkiness, jittery, joltiness, jumpy, keyed-up,
   lambency, lambent, light show, on edge, on tenterhooks, on tiptoe,
   palpitation, palsied, palsy, panting, pitapat, pitter-patter, play,
   play of light, playing, quaking, quaver, quavering, quavery,
   quiver, quivery, restlessness, shakes, shaking, shaky, shiver,
   shivering, shivers, shivery, shook up, shudder, shuddering,
   skittery, spasms, stroboscopic, succussatory, succussion,
   succussive, taut, tense, throb, throbbing, tremble, trembling,
   trembly, tremor, tremulant, tremulous, tremulousness, trepidation,
   trepidity, twitchy, twitter, twittery, unrest, vibrating,
   vibration, wavering, wavery, with bated breath, with muscles tense,
   wobbly