ἐναραρίσκω
From LSJ
ἔγνω δὲ φώρ τε φῶρα καὶ λύκος λύκον → the thief knows the thief and the wolf knows the wolf, and thief knows thief and wolf his fellow wolf, set a thief to catch a thief
English (LSJ)
aor. 1 ἐνῆρσα,
A fit or fasten in, ἐν δὲ σταθμοὺς ἄρσε Od. 21.45. II pf. ἐνάρηρα, intr., to be fitted in, εὖ ἐναρηρός 5.236; οὐρανῷ εὖ ἐνάρηρεν ἀλάλματα Arat.453.