hot air 
noun [mass noun] informal
Empty talk that is intended to impress: they dismissed the theory as a load of hot air...
- One could hardly fail to see the parallel of two vast but empty projects full of little but hot air and blasted hopes.
- Women talking are doing more than just filling the environment with hot air.
- So all the huffing and puffing from Free TV Australia is just special interest hot air.
- Keneally, Thomas
- Kennan, George
- Kennebec River
- Kennedy
- Kennedy, Anthony
- Kennedy, Cape
- photo-galvanographic
- photo-galvanography
- photogelatin
- photogen
- photogene
- photo-generated
- photogenic
- photogenically
- photogenic drawing
- photogenous
- photogeny
- photogeologic
- photogeological
- photogeologically
- photogeologist
- photogeology
- photoglyph
- photoglyphic
- photoglyphography