[syn: edacious, esurient, rapacious, ravening, ravenous, voracious, wolfish]
The Collaborative International Dictionary of English v.0.48:
Ravenous \Rav"en*ous\ (r[a^]v"'n*[u^]s), a. [From 2d Raven.]
   1. Devouring with rapacious eagerness; furiously voracious;
      hungry even to rage; as, a ravenous wolf or vulture.
      [1913 Webster]
   2. Eager for prey or gratification; as, a ravenous appetite
      or desire.
      [1913 Webster] -- Rav"en*ous*ly, adv. --
      Rav"en*ous*ness, n.
      [1913 Webster]
WordNet (r) 3.0 (2006):
ravenous
    adj 1: extremely hungry; "they were tired and famished for food
           and sleep"; "a ravenous boy"; "the family was starved and
           ragged"; "fell into the esurient embrance of a predatory
           enemy" [syn: famished, ravenous, sharp-set,
           starved, esurient]
    2: devouring or craving food in great quantities; "edacious
       vultures"; "a rapacious appetite"; "ravenous as wolves";
       "voracious sharks" [syn: edacious, esurient, rapacious,
       ravening, ravenous, voracious, wolfish]
Moby Thesaurus II by Grady Ward, 1.0:
85 Moby Thesaurus words for "ravenous":
   Apician, a hog for, acquisitive, all-devouring, all-engulfing,
   avaricious, avid, bloodsucking, bolting, bottomless, coveting,
   covetous, cramming, crapulent, crapulous, devouring, dog-hungry,
   edacious, empty, esurient, extortionate, famished, famishing,
   fasting, glutting, gluttonizing, gluttonous, gobbling, gorging,
   grabby, grasping, greedy, gulping, guttling, guzzling,
   half-famished, half-starved, hoggish, hungering, hungry,
   hyperphagic, insatiable, insatiate, intemperate, limitless, lupine,
   mercenary, miserly, money-hungry, money-mad, omnivorous,
   overgreedy, parasitic, peckish, piggish, pinched with hunger,
   polyphagic, predacious, predatory, quenchless, rapacious,
   raptorial, ravening, sharkish, sharp-set, slakeless, sordid,
   starved, starving, stuffing, swinish, unappeasable, unappeased,
   unfilled, unquenchable, unsated, unsatisfied, unslakeable,
   unslaked, venal, voracious, vulturine, vulturous, wolfing,
   wolfish