tumid (adj) – swelling, swollen, or bulging; pompous, turgid, or bombastic
BREAKDOWN: TUM- (to swell) + -ID (that which is)
This word is built on the root TUM-, which means to swell or to be proud.
Common TUM- words include tomb and tumor.
More esoteric TUM- words include contumely, tumefacient, and tumulous.