Usage: 2 forms in 2 verses
Form Translated As     In Verse(s)
πλημμελήσεωσ their trespass LXX.Ezra.10.19
πλημέλησιν a trespass LXX.Lev.5.19

Liddell-Scott-Jones

πλημμέλησις (plēmmelēsis) a trespass G:N-F

πλημμέλησις-ησις, εως, ,

trespassing, sinning, [LXX]