Usage: 2 forms in 2 verses
Form Translated As     In Verse(s)
εγχειρήματοσ enterprise LXX.Jer.23.20
εγχείρημα enterprise LXX.Jer.30.24

Liddell-Scott-Jones

ἐγχείρημα (egcheirēma) an enterprise G:N-N

ἐγχείρημα-ημα, ατος, τό,

undertaking, attempt, [Refs 5th c.BC+]; essay in argument, [Refs 4th c.BC+]