σῆψις
From LSJ
λέγεις, ἃ δὲ λέγεις ἕνεκα τοῦ λαβεῖν λέγεις → you speak, but you say what you say for the sake of gain (Menander, fr. 776)
English (LSJ)
Dor. σᾶψις, εως, ἡ, (σήπομαι)
A fermentation, putrefaction, decay, αὐχμηραί τε νόσοι καὶ σήψιες Emp.121; ὑγρῶν σάψιες Ti.Locr. 102c, cf. Arist.HA569a28; τὸ τέλος τῆς κατὰ φύσιν φθορᾶς σ. ἐστιν Id.Mete.379a8; σ. χλωρή Hp.Prorrh.1.99; σ. ὀστέων,= σφάκελος, Moer.p.342P. II (σήπω) the process by which the intestines reject that part of food which is not nutritious, opp. πέψις, Arist.GA762a14, cf. Ath.7.276d, and v. σήπω 11.4. (Acc. to Gal.19.373 Empedocles said that πέψις took place σήψει.)