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Noun: diddlysquat  ,di-d(u-)lee'skwót
Usage: informal
  1. Anything at all
    "you don't know diddlysquat";
    - jack [N. Amer, informal], doodly-squat [informal], diddly-squat [informal], diddly [N. Amer, informal], diddley [N. Amer, informal], squat [N. Amer, informal]

Type of: small indefinite amount, small indefinite quantity