E / extempŏrālĭtas
noun hapax

extempŏrālĭtas

gen. ātis · gender feminine · decl. 3rd
extemporalis
the faculty of extemporaneous speaking; versifying
the faculty of extemporaneous speaking or versifying, Suet. Tit. 3 (for which: extemporalis facultas, id. Aug. 84: facultas ex tempore dicendi, Quint. 10, 7, 1).