"impaired power of digestion," 1706, from Late Latin dyspepsia or a back-formation from dyspeptic (q.v.). Earlier Englished as dyspepsy (1650s). Its opposite is eupepsia.
Entries linking to dyspepsia
dyspeptic adj.
1690s, "causing dyspepsia" (a sense now obsolete); by 1789 as "pertaining to dyspepsia;" by 1822 as "suffering from dyspepsia;" from Greek dyspeptos "hard to digest," from dys- "bad, difficult" (see dys-) + peptos "digested," from peptein "to digest" (from PIE root *pekw- "to cook, ripen"). Also "characteristic of one suffering from dyspepsia" (depressed, pessimistic, misanthropic), by 1894; dyspepsical in this sense is by 1825.
*pekw-
Proto-Indo-European root meaning "to cook, ripen."
It forms all or part of: apricot; biscuit; charcuterie; concoct; concoction; cook; cuisine; culinary; decoct; decoction; drupe; dyspepsia; dyspeptic; eupeptic; kiln; kitchen; peptic; peptide; peptone; precocious; pumpkin; ricotta; terra-cotta.
It is the hypothetical source of/evidence for its existence is provided by: Sanskrit pakvah "cooked, ripe;" Avestan -paka- "cooked;" Greek peptein "to cook, ripen, digest," pepon "ripe;" Latin coquere "to cook, prepare food, ripen, digest, turn over in the mind," Oscan popina "kitchen;" Lithuanian kepti "to bake, roast;" Old Church Slavonic pecenu "roasted;" Welsh poeth "cooked, baked, hot."