hot air

hot air (uncountable)

  1. (literal) Air that has been heated, especially so as to function as the lifting agent of a hot-air balloon.
    The balloon was equipped with a burner to create hot air for lift.
  2. (idiomatic) Empty, confused, or exaggerated talk lacking meaning or substance; bluster.
    • 2001 June 24, Johanna McGeary, "[,9171,139456,00.html How Bad Is China?]," Time (retrieved 22 Sept 2013):
      Some of the steam in Washington rises from real issues, but a lot is the hot air of partisan politics.
  • Italian: aria calda

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