ὑπεξίστημι
ἰχθύς ἐκ τῆς κεφαλῆς ὄζειν ἄρχεται → the fish stinks from the head, a fish rots from the head down, the fish rots from the head down, fish begin to stink at the head, the fish stinks first at the head, corruption starts at the top, the rot starts at the top
English (LSJ)
A alter gradually, Hsch.; esp. for the worse, perplex, Callistr.Stat.2. II Pass., with aor. 2 and pf. Act., withdraw from, τοῦ νεώ Luc.Am.17; τῆς πόλεως Plu.Cat.Mi.19; τῆς ἀγορᾶς Id.CG1; ὑ. τῆς ἀρχῆς give up all claim to it, Hdt.3.83: c. inf., ὑ. ἄρχειν Luc.Sat.6. 2 c. acc., go out of the way of, avoid, ὑπεκστῆναι βούλομαι τὸν λόγον Pl.Phlb.43a; cf. ὑπεξέρχομαι 1. 3 c. dat., give place to, make way for, X.Ath.1.10; yield to, give way to, ταῖς ἀπορίαις, τῷ καιρῷ, Plu.Sol.25, Cat.Mi. 35.