flounder
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 > Greek (Woodhouse)
verb intransitive
P. and V. κυλινδεῖσθαι. Ar. and V. κυλίνδεσθαι.
get out of one's depth: Met. P. βαπτίζεσθαι (Plato, Euthyd. 277D).