[1] : The Collaborative International Dictionary of English v.0.48

putrid \pu"trid\, a. l. putridus, fr. putrere to be rotten, fr.
   puter, or putris, rotten, fr. putere to stink, to be rotten:
   cf. f. putride. see pus, foul, a.
   1. tending to decomposition or decay; decomposed; rotten; --
      said of animal or vegetable matter; as, putrid flesh. see
      putrefaction.
      1913 webster

   2. indicating or proceeding from a decayed state of animal or
      vegetable matter; as, a putrid smell.
      1913 webster

   putrid fever med., typhus fever; -- so called from the
      decomposing and offensive state of the discharges and
      diseased textures of the body.

   putrid sore throat med., a gangrenous inflammation of the
      fauces and pharynx.
      1913 webster
see also:
pus foul putrefaction putrid fever putrid sore throat 

[2] : WordNet (r) 2.0

putrid
     adj 1: of or relating to or attended by putrefaction; "putrid
            decomposition"
     2: having undergone infection; "a purulent  wound" syn: infected,
         purulent, pussy
     3: in an advanced state of decomposition and having a foul
        odor; "horrible like raw and putrid flesh"- somerset
        maugham syn: putrefied, putrified
     4: offensively malodorous; "a putrid smell" syn: fetid, foetid,
         foul, foul-smelling, funky, noisome, smelly, stinking
     5: morally corrupt or evil; "the putrid atmosphere of the
        court"
see also:
infected purulent pussy putrefied putrified fetid 
foetid foul foul-smelling funky noisome 
smelly stinking 

[3] : Moby Thesaurus II by Grady Ward, 1.0

122 moby thesaurus words for "putrid":
   bad, bad-smelling, barfy, bum, cankered, carious, cheesy, corrupt,
   crappy, creepy, crummy, decayed, decaying, decomposed, decomposing,
   degenerate, depraved, dirty, disgusting, fecal, feculent,
   festering, fetid, filthy, flagitious, flyblown, foul, frowsty,
   frowy, frowzy, fulsome, funky, fusty, gamy, gangrened, gangrenous,
   gloppy, godawful, gone bad, goshawful, graveolent, grim, gunky,
   hairy, high, icky, ill-smelling, maggoty, malodorous, mephitic,
   miasmal, miasmic, mildewed, mildewy, moldy, mortified, mouldy,
   mucky, musty, nasty, nauseating, necrosed, necrotic, nefarious,
   nidorous, noisome, noxious, odious, odorous, offensive, olid,
   ordurous, peccant, perverse, puky, punk, putrefied, putrescent,
   rancid, rank, reasty, reasy, reechy, reeking, reeky, repulsive,
   rotten, rotting, scabby, scummy, scurfy, shitty, slabby, slimy,
   sloppy, sloshy, sludgy, slushy, smellful, smelling, smelly,
   sphacelated, spoiled, spoilt, sposhy, stenchy, stinking, stinky,
   strong, stuffy, sulfurous, suppurating, suppurative, tainted,
   ulcerated, unhealthy, vicious, vile, villainous, vomity, wormy,
   yecchy

Putrid >> P Words
Putrid, definition of term: Putrid
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