Usage: 3 forms in 3 verses
Form Translated As     In Verse(s)
διαπτώσεωσ Downfall LXX.Jer.19.14
διαπτώσει a downfall LXX.1Chr.4.9
διάπτωσισ Downfall LXX.Jer.19.6

Liddell-Scott-Jones

διάπτωσις (diaptōsis) a downfall G:N-F

διάπτωσις-πτωσις, εως, ,

fall, [Refs 2nd c.AD+]: chiefly metaphorically, failure, [Refs 4th c.BC+]