dyspepsy
Noun
Meaning
A kind of indigestion; a state of the stomach in which its functions are disturbed, without the presence of other diseases, or, if others are present, they are of minor importance. Its symptoms are loss of appetite, nausea, heartburn, acrid or fetid eructations, a sense of weight or fullness in the stomach, etc.
Source: Webster's dictionarySynonyms
gas
pain
nausea
flatulence
indigestion
heartburn
dyspepsia
flu
acidosis
acid indigestion
digestive upset
Examples
Dyspepsy is the ruin of most things: empires, expeditions, and everything else.