The Collaborative International Dictionary of English v.0.48:

Touchy \Touch"y\, a. [For techy, tetchy.]
   Peevish; irritable; irascible; techy; apt to take fire.
   [Colloq.]
   [1913 Webster]

         It may be said of Dryden that he was at no time touchy
         about personal attacks.                  --Saintsbury.
   [1913 Webster]

WordNet (r) 3.0 (2006):

touchy
    adj 1: quick to take offense [syn: huffy, thin-skinned,
           feisty, touchy]
    2: difficult to handle; requiring great tact; "delicate
       negotiations with the big powers";"hesitates to be explicit
       on so ticklish a matter"; "a touchy subject" [syn:
       delicate, ticklish, touchy]

Moby Thesaurus II by Grady Ward, 1.0:

104 Moby Thesaurus words for "touchy":
   agitable, allergic, anaphylactic, argumentative, bad-tempered,
   bearish, cantankerous, captious, chancy, choleric, close,
   contentious, crabbed, crabby, cranky, critical, cross, crusty,
   dangerous, delicate, dicey, disputatious, dyspeptic, edgy,
   emotional, emotionally unstable, empathetic, empathic, eruptive,
   excitable, explosive, frightening, goosy, grouchy, hair-raising,
   hairbreadth, hairy, harmful, hazardous, high-mettled,
   high-spirited, high-strung, highly emotional, hot-tempered,
   hyperesthetic, hyperpathic, hypersensitive, inflammable, irascible,
   irritable, itchy, mettlesome, miffy, nerve-racking, nervous,
   on slippery ground, on thin ice, overrefined, oversensible,
   oversensitive, overtender, parlous, passible, peevish, perturbable,
   pettish, petulant, precarious, prickly, querulous, quick-tempered,
   ratty, refined, responsive, risky, sensitive, short-tempered,
   skittish, slippery, slippy, snappish, snarling, splenetic,
   startlish, supersensitive, sympathetic, tactful, temperamental,
   tender, tense, terrifying, testy, tetchy, thin-skinned, ticklish,
   touch-and-go, tricky, uncertain, unpredictable, unsafe, unsure,
   volatile, volcanic, waspish