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.
- recross
- recrown
- recrucify
- recrudesce
- recrudescence
- recrudescency
- recrudescent
- recruit
- recruitable
- recruital
- recruitee
- recruiter
- recruithood
- recruiting book
- recruiting drum
- recruiting order
- recruiting station
- recruitment
- recruitship
- recrystallise
- recrystallizable
- recrystallization
- recrystallization temperature
- recrystallize
- rec. sec.