The Collaborative International Dictionary of English v.0.48:

Indiscriminate \In`dis*crim"i*nate\, a.
   Not discriminate; wanting discrimination; undistinguishing;
   not making any distinction; confused; promiscuous. "Blind or
   indiscriminate forgiveness." --I. Taylor.
   [1913 Webster]

         The indiscriminate defense of right and wrong.
                                                  --Junius.
   -- In`dis*crim"i*nate*ly, adv. --Cowper.
   [1913 Webster]

WordNet (r) 3.0 (2006):

indiscriminate
    adj 1: failing to make or recognize distinctions
    2: not marked by fine distinctions; "indiscriminate reading
       habits"; "an indiscriminate mixture of colors and styles"
       [ant: discriminate]

Moby Thesaurus II by Grady Ward, 1.0:

159 Moby Thesaurus words for "indiscriminate":
   aimless, amalgamated, ambiguous, ambivalent, amorphous, amphibious,
   assorted, blanket, blended, broad, capricious, careless, casual,
   causeless, chaotic, combined, complex, composite, compound,
   compounded, confused, conglomerate, dappled, designless, desultory,
   diffuse, disarranged, disarticulated, discontinuous, disjunct,
   disordered, disorganized, dispersed, disproportionate, driftless,
   dysteleological, eclectic, equivocal, erratic, extensive,
   far-embracing, far-extending, far-flung, far-flying, far-going,
   far-ranging, far-reaching, fifty-fifty, fitful, formless,
   frivolous, general, gratuitous, half-and-half, haphazard,
   heterogeneous, higgledy-piggledy, hit-or-miss, immethodical,
   imprudent, inchoate, incoherent, indiscreet, indiscriminating,
   indiscriminative, inexplicable, insensitive, intricate, ironic,
   irregular, jumbled, large-scale, liberal, many-sided, meaningless,
   medley, mindless, mingled, miscellaneous, misshapen, mixed,
   mixed-up, motley, multifaceted, multifarious, multinational,
   multiracial, nonjudgmental, nonsymmetrical, nonsystematic,
   nonuniform, orderless, patchy, planless, pluralistic, promiscuous,
   purposeless, random, scrambled, senseless, shallow, shapeless,
   spasmodic, sporadic, spot, stochastic, straggling, straggly, stray,
   superficial, sweeping, syncretic, systemless, tactless,
   thrown together, unaccountable, unarranged, unclassified,
   unconsidered, uncritical, uncriticizing, undemanding,
   undifferentiating, undirected, undiscerning, undiscreet,
   undiscriminated, undiscriminating, undiscriminative,
   undistinguishing, unexacting, unfastidious, ungraded, unjoined,
   unmethodical, unmeticulous, unmotivated, unordered, unorganized,
   unparticular, unplanned, unselective, unsorted, unsubtle,
   unsymmetrical, unsystematic, untactful, ununiform, vague, varied,
   wandering, wholesale, wide, wide-extended, wide-extending,
   wide-ranging, wide-reaching, wide-stretching, widespread