Lewis & Short

trĕmĕbundus (trĕmĭb-), a, um, adj. [tremo],

  1. I. trembling, quivering, shaking (mostly poet.): (Iphigenia) tremibunda ad aras Deducta est, Lucr 1, 95: tremebunda manu tangere, Cic. Dom. 52, 134; cf.: Caius a primā tremebundus luce, trembling with fear, Mart. 9, 93, 5: membra, Ov. M. 4, 133: leo, Claud. ap. Eutr. 2, 440: tremebundā voce, Auct. Her 3, 14, 25.
    Comp.: (cucumis) effetae tremebundior ubere porcae, i.e. more flabby, softer, Col. poët. 10, 396.
  2. II. Transf.: cornus (i.e. hasta), Sil. 10, 119: tela, id. 5, 628: oratio, Nazar. Pan. Const. 2.