sixtus iv Sixtus • sixty · · · Info · Definitions · Characters · · sixtus iv · · Text Common · · Latin · · Scripts 9 · · Length 3 · · Syllables Definitions · · · (noun) Italian pope from 1471 to 1484 who consented to the establishment of the Spanish Inquisition and built the Sistine Chapel (1414-1484). Synonyms: Sixtus IV, Francesco della Rovere. · · Noun Definition 1 Characters · · space U+0020 i latin small letter i U+0069 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075 v latin small letter v U+0076 x latin small letter x U+0078