The term ONE FULL OF HOT AIR can be solved by two crossword solutions: DRYER (5 letters) and GASBAG (6 letters). A dryer is a common household appliance used to dry clothes, towels, and other fabrics. It works by blowing hot air over the wet items to evaporate the water. A GASBAG is a slang term for someone who talks a lot without saying anything of substance. It is often used to describe someone who is full of hot air, or who talks a lot without saying anything meaningful.