Abbott-Smith Manual Greek Lexicon
σήπω (G4595)
1 σήπω [in LXX; Ps 37 (38):5 ( מקק ni.), Jb 33:21 ( כּלה ) 40:7 , Si 14:19 , al. ;] to make corrupt : 2 pf. act, with mid, sense (v. M, Pr. , 154), σέσηπεν , has perished, become corrupted , Ja 5:2 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain