Liddell-Scott-Jones

ἐκρήγνυμι (ekrēgnumi) be torn from ^G:V

ἐκρήγνυμι-ρήγνῡμι,

future - ρήξω [Refs 5th c.BC+]:—break off, snap asunder, νευρὴν δ᾽ ἐξέρρηξε νεόστροφον [Refs 8th c.BC+] the water broke off a piece of the road, [Refs]:—passive, break, snap asunder, of bows, εἰ τὸν πάντα χρόνον ἐντεταμένα εἴη, ἐκρήγνυμιραγείη ἂν [τὰ τόξα] [Refs 5th c.BC+]; of clothes, to be rent asunder, conjecture in [Refs 4th c.BC+]

__II with accusative cognate, let break forth, break out with, νεφέλη ὄμβρον ἐκρήγνυμιρήξει [Refs 1st c.AD+]:—passive, break out, of an ulcer, [Refs 5th c.BC+]; burst, of an abscess, [ἐκρήγνυμιραγήσονται.. ποταμοὶ πυρός 4th-5th c.BC: Aeschylus Tragicus “Prometheus Vinctus” 369 ">Refs 5th c.BC+]; of a quarrel, ἐξερράγη ἐς τὸ μέσον broke out in public, [Refs 5th c.BC+]; of persons, break out into passionate words, ἐκρήγνυμιραγῆναι ἔς τινα [Refs 5th c.BC+]: perfect ἐξερρωγέναι throw aside restraint, become dissolute, [Refs 6th c.AD+]
__III sometimes intransitive in active, οὔ ποτ᾽ ἐκρήγνυμιρήξει μάχη S.[same place]; ἐκρήγνυμιρήξας ἄνεμος [Refs 4th c.BC+]perfect participle ἐξερρωγώς precipitous, ὄρη [Refs 1st c.AD+]