The term 'LETS THE AIR OUT' can be broken down into four crossword solutions: DEFLATES (8 letters), EXHALES (7 letters), BURPS (5 letters), and SINGS (5 letters). DEFLATES is a verb meaning to reduce the pressure of air or gas in something, such as a balloon or tire. EXHALES is also a verb, meaning to breathe out air from the lungs. BURPS is a noun referring to the sound made when air is released from the stomach through the mouth. Finally, SINGS is a verb meaning to produce musical tones with the voice.