hot air

Noun
  1. Air that has been heated and tends to rise (synset 114866093)
    is a type of: air - a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of
  2. Loud and confused and empty talk (synset 106621856)
    "mere rhetoric"
    is a type of: bunk, hokum, meaninglessness, nonsense, nonsensicality - a message that seems to convey no meaning
    same as: empty talk, empty words, palaver, rhetoric

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