Lewis Short
(adjective) : interrŏgātīvus, a, um, interrogo
* Of or belonging to a question, interrogative: adverbia,Prisc. p. 1059 P.—Adv.: interrŏgātīvē, interrogatively, Ps.-Ascon. ap. Verr. 2, 1, 56; Tert. adv. Marc. 4, 41; Schol. Vet. Juv. 9, 48.
Charlton T. Lewis, Charles Short, A Latin Dictionary