The Collaborative International Dictionary of English v.0.48:

Hazy \Ha"zy\ (h[=a]"z[y^]), a. [From Haze, n.]
   1. Thick with haze; somewhat obscured with haze; not clear or
      transparent. "A tender, hazy brightness." --Wordsworth.
      [1913 Webster]

   2. Obscure; confused; not clear; as, a hazy argument; a hazy
      intellect. --Mrs. Gore.
      [1913 Webster]

WordNet (r) 3.0 (2006):

hazy
    adj 1: filled or abounding with fog or mist; "a brumous October
           morning" [syn: brumous, foggy, hazy, misty]
    2: indistinct or hazy in outline; "a landscape of blurred
       outlines"; "the trees were just blurry shapes" [syn:
       bleary, blurred, blurry, foggy, fuzzy, hazy,
       muzzy]

Moby Thesaurus II by Grady Ward, 1.0:

120 Moby Thesaurus words for "hazy":
   addlebrained, addled, addleheaded, addlepated, aleatoric, aleatory,
   amorphic, amorphous, anarchic, baggy, beclouded, befuddled,
   bemused, blear, bleared, bleary, blind, blobby, blurred, blurry,
   broad, chance, chancy, chaotic, characterless, clear as mud,
   clouded, cloudy, confused, dark, dazed, dim, disordered,
   disorderly, dreamy, dull, faint, featureless, feeble, filmy,
   fogged, foggy, formless, fuddlebrained, fuddled, fuzzy, general,
   half-seen, half-visible, hit-or-miss, ill-defined, imprecise,
   in a fog, in a muddle, inaccurate, inchoate, incoherent,
   inconspicuous, indecisive, indefinable, indefinite, indeterminable,
   indeterminate, indistinct, indistinguishable, inexact, inform,
   kaleidoscopic, lax, loose, low-profile, lumpen, mazed,
   merely glimpsed, misted, misty, muddled, muddleheaded, muddy,
   murky, mushy, muzzy, nebulous, nondescript, nonspecific, obscure,
   opaque, orderless, out of focus, overcast, pale, pea-soupy,
   puzzleheaded, random, semivisible, shadowed forth, shadowy,
   shapeless, smoggy, soupy, stochastic, stuporous, sweeping, tranced,
   transcendent, uncertain, unclear, undefined, undestined,
   undetermined, unordered, unorganized, unplain, unrecognizable,
   unspecified, vague, vaporous, vapory, veiled, weak