Lewis Short
ex-păvesco, pāvi, 3
* V. inch. n. and a., to be or become greatly terrified, to be very much afraid; to be greatly frightened at or afraid of, to fear greatly (perh. not anteAug.).
* Absol.: expavescentibus repente,Plin. 23, 1, 24, § 49.—With ad: ad tumultum aliquem. Plin. 10, 75, 97, § 209; cf.: cum ad id expavisset,Liv. 6, 34, 6.— With ab: anseres a primo conspectu ejus expavescunt,Plin. 21, 11, 36, § 62; Vulg. Gen. 27, 33 al.
* With acc.: tonitrua praeter modum,Suet. Aug. 90; id. Tib. 69: muliebriter ensem,Hor. C. 1, 37, 23: speciem adulantis,Tac. H. 2, 76: insidias,Suet. Claud. 36: mortem,id. Ner. 2: frigusque famemque,Juv. 6, 361: acres moles (Rhodanus),Sil. 3, 464: id, ut crimen ingens, expavescendum est,Quint. 9, 3, 35.
Charlton T. Lewis, Charles Short, A Latin Dictionary