φρυάσσω: 1 aorist 3 person plural ἐφρύαξαν; (everywhere in secular authors and also in Macc. as a deponent middle φρυάσσομαι (Winers Grammar, 24)); to neigh, stamp the ground, prance, snort; to be high-spirited: properly, of horses (Anthol. 5, 202, 4; Callimachus () lav. Pallad. verse 2); of men, to take on lofty airs, behave arrogantly (2Ma_7:34; 3Ma_2:2, Anthol., Diodorus, Plutarch, others; (cf. Wetstein on Acts as below)); active for ψΘβΗωΡ, to be tumultuous, to rage, Act_4:25 from Psa_2:1.

φρυάσσω phryassō 1x pr. to snort, neigh, stamp, etc.; as a high-spirited horse; hence, to be noisy, fierce, insolent, and tumultuous, to rage, tumultuate, Act_4:25

† φρυάσσω (so Ps, l.c ., NT; elsewhere depon., φρυάσσομαι , Att. . -ττ -), [in LXX : Psa_2:1 ( H7283 ), 2Ma_7:34 R , 3Ma_2:2 * ;] prop ., of horses, to neigh, whinny and prance ( Plut ., al. ). Metaph ., to be wanton, insolent: Act_4:25 ( LXX ).†

φρυάσσω [page 677] From denoting the vehement neighing of horses, this verb came to be used of the haughtiness or insolence of men (cf. prancing proconsuls ), as in Act. 4:25 from Psa. 2:1. In M. Anton, iv. 48 μετὰ δεινοῦ φρυάγματος , the reference is to the revolting insolence with which tyrants have exercised their power of life and death.

φρυάσσω (so Ps, l.with, NT; elsewhere depon., φρυάσσομαι, Att.. -ττ-), [in LXX: Psa.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: Act.4:25 (LXX).† (AS)