ἐνδομυχάω

From LSJ

Οὕτως ἔδειξέν μοι κύριος καὶ ἰδοὺ ἐπιγονὴ ἀκρίδων ἐρχομένη ἑωθινή, καὶ ἰδοὺ βροῦχος εἷς Γωγ ὁ βασιλεύς (Amos 7:1) → Thus the Lord showed me and look, early-morning offspring of locusts coming, and look, one locust-larva: Gog the king.

Source

Spanish (DGE)

mantener oculto ἕτερα μὲν ἐν τῇ καρδίᾳ ἐνδομυχᾷς Cyr.Al.Luc.2.91.24.