facetiaeEnglishOxford New American Dictionaryfacetiae /fəˈsēSHēˌē, , fəˈsiʃiˌi , fəˈsēSHēˌī, fəˈsiʃiˌaɪ / ▸ plural noun 1 dated pornographic literature. 2 archaic humorous or witty sayings. – ORIGIN early 16th century : from Latin, plural of facetia ‘jest’, from facetus ‘witty’.