φρυάσσω
(so Ps, l.with, NT; elsewhere depon., φρυάσσομαι, Att.. -ττ-), [in LXX: Psalm 2:1 (רָגַשׁ), 2Ma.7.34 R, 3Ma.2.2 * ;]
prop., of horses, to neigh, whinny and prance (Plut., al.). Metaphorical, to be wanton, insolent: Acts 4:25 (LXX).