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Noun: hot air  hót ehr
  1. [informal] Insincere or vague talk with empty promises etc. that is supposed to impress
    "mere hot air";
    - empty words, empty talk, rhetoric, bluster
  2. Air that has been heated and tends to rise

Type of: air, bunk [informal], hokum [informal], meaninglessness, nonsense, nonsensicality

Encyclopedia: Hot air