gassiest

/G AE1 S IY0 AH0 S T/
adjective
  1. 1

    Having the nature of, or containing, gas.

  2. 2

    Of food or drink: tending to cause flatulence.

    โ€œBeans are a gassy food.โ€

    syn:farty
  3. 3

    Tending to be long-winded or wordy, especially in a boastful and vain manner.

Source: https://en.wiktionary.org/wiki/gassiest, https://en.wiktionary.org/wiki/gassy