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Etymology 1Edit

Uncertain. Some dictionaries suggest a Germanic source; compare Low German fussig ‎(loose; spongy), Dutch voos ‎(unsound; rotten). Others, such as Webster's New College Dictionary, suggest a back-formation from fuzzy. The Oxford English Dictionary suggests, "Perhaps imitative of the action of blowing away light particles."


fuzz ‎(countable and uncountable, plural fuzzes)

  1. A frizzy mass of hair or fibre.
    • 1895, Hamlin Garland, Rose of Dutcher's Coolly, page 352:
      His cheeks were like peaches, with much the same sort of fuzz over them.
  2. Quality of an image that is unclear; a blurred image.
    • 2010, Iain Boyd Whyte, Beyond the Finite: The Sublime in Art and Science, New York: Oxford University Press, ISBN 9780199737697:
      ...scientific advances happen more often at the frontier of representation, at the edge of resolution where an image dissolves into fuzz and blur.
  3. (computing) The random data used in fuzz testing.
    • 2008, Asoke Talukder; Manish Chaitanya, Architecting Secure Software Systems, Boca Raton: CRC Press, ISBN 9781420087840, page 94:
      "Fuzz testing" or "fuzzing" is a technique for software testing that provides random data ("fuzz") to the inputs of a program.
  4. (obsolete) A state of befuddlement.
    • 1784, Jonathan Swift, "Journal to Stella", The works of the Rev. Dr. Jonathan Swift, page 54:
      I think I'm in a fuzz, and don't know what I ſay, I never ſaw the like.


fuzz ‎(third-person singular simple present fuzzes, present participle fuzzing, simple past and past participle fuzzed)

  1. (transitive) To make fuzzy.
  2. (intransitive) To become fuzzy.
  3. (transitive, dated) To make drunk.
    • 2004, Quintin Jardine, Alarm Call, London: Headline, ISBN 0755321030:
      Or maybe my mind was just fuzzed with the drink.
  4. (computing) To test a software component by running it on randomly generated input.

Etymology 2Edit

Unknown. Godfrey Irwin (1930) suggests a possible connection to fuss, "over-particular", excessive bother.


fuzz ‎(uncountable)

  1. (slang, with "the") The police.
  • Godfrey Irwin. 1930. American Tramp and Underworld Slang, New York, Sears. OCLC 907782461



fuzz m ‎(uncountable)

  1. fuzz