stomach upset stomach-twitched • stomach-weary · · · Info · Definitions · Synonyms · Characters · · stomach upset · · Text Common · · Latin · · Scripts 13 · · Length 4 · · Syllables Definitions · · · (noun) a disorder of digestive function characterized by discomfort or heartburn or nausea. Synonyms: indigestion, dyspepsia, stomach upset, upset stomach. · · Noun Definition 1 Synonyms · · · indigestion · · Synonym 1 dyspepsia · · Synonym 2 upset stomach · · Synonym 3 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 h latin small letter h U+0068 m latin small letter m U+006D o latin small letter o U+006F p latin small letter p U+0070 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075