The Collaborative International Dictionary of English v.0.48:

Scrappy \Scrap"py\, a.
   Consisting of scraps; fragmentary; lacking unity or
   consistency; as, a scrappy lecture.
   [1913 Webster]

         A dreadfully scrappy dinner.             --Thackeray.
   [1913 Webster]

WordNet (r) 3.0 (2006):

scrappy
    adj 1: full of fighting spirit; "a scrappy admiral"

Moby Thesaurus II by Grady Ward, 1.0:

155 Moby Thesaurus words for "scrappy":
   aggressive, antagonistic, argumental, argumentative, arrested,
   battling, bellicose, belligerent, bloodthirsty, bloody,
   bloody-minded, brawling, broken, broken off, callow, capricious,
   careening, cat-and-dog, cat-and-doggish, catchy, chauvinist,
   chauvinistic, chopped-off, choppy, combative, contentious,
   controversial, decousu, defective, deficient, desultory, deviative,
   disconnected, discontinued, discontinuous, discrete, disjunctive,
   disputatious, eccentric, embryonic, enemy, episodic, erratic,
   failing, ferocious, fierce, fighting, fitful, flickering,
   fluctuating, full of fight, guttering, halting, hawkish,
   herky-jerky, heteroclite, hostile, hypoplastic, immature,
   immethodical, in arrear, in arrears, in default, in short supply,
   inadequate, incoherent, incomplete, inconstant, infant, inimical,
   intermittent, intermitting, interrupted, irregular, jagged, jerky,
   jingo, jingoish, jingoist, jingoistic, lacking, litigious,
   lurching, martial, militant, militaristic, military, missing,
   needing, noncontinuous, nonlinear, nonsequential, nonserial,
   nonuniform, offensive, parenthetic, part, partial, patchy, polemic,
   pugnacious, quarrelsome, rambling, rough, saber-rattling,
   sanguinary, sanguineous, savage, scant, scanty, short, shy,
   sketchy, snatchy, soldierlike, soldierly, spasmatic, spasmic,
   spasmodic, spastic, sporadic, spotty, staggering, suspended,
   trigger-happy, truculent, uncertain, unconnected, underdeveloped,
   undeveloped, unequal, uneven, unfriendly, unjoined, unmethodical,
   unmetrical, unpacific, unpeaceable, unpeaceful, unregular,
   unrhythmical, unsettled, unsteady, unsuccessive, unsystematic,
   variable, veering, wandering, wanting, warlike, warmongering,
   warring, wavering, wobbling, wobbly