flatulent

1. Of, afflicted with, or caused by flatulence.
2. Inducing or generating flatulence.
3. Pompous; bloated.

[French, from Latin flātus, fart. See flatus.]

adjective

Filled up with or as if with something insubstantial: inflated, overblown, tumescent, tumid, turgid, windy. See increase/decrease, plain/fancy.

Definition: pretentious, long-winded
Antonyms: brief, timid, unpretentious

Characterized by flatulence; distended with gas.

The adjective has 2 meanings:

Meaning #1: generating excessive gas in the alimentary canal

Meaning #2: suffering from excessive gas in the alimentary canal
  Synonyms: colicky, gassy