Adjective muzzy has 2 senses
  1. bleary, blurred, blurry, foggy, fuzzy, hazy, muzzy - indistinct or hazy in outline; "a landscape of blurred outlines"; "the trees were just blurry shapes"
    Antonym: distinct (indirect, via indistinct)
  2. addled, befuddled, muddled, muzzy, woolly, wooly, woolly-headed, wooly-minded - confused and vague; used especially of thinking; "muddleheaded ideas"; "your addled little brain"; "woolly thinking"; "woolly-headed ideas"
    Antonyms: clearheaded, clear-thinking (indirect, via confused)
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