Usage: 2 forms in 3 verses
Form Translated As     In Verse(s)
αποκρυφήν for his concealment LXX.2Sam.22.12LXX.Ps.18.11
αποκρυφή his concealment LXX.Job.22.14

Liddell-Scott-Jones

ἀποκρυφή (apokruphē) concealment G:N-F

ἀποκρυφή, ,

hiding-place, [LXX]

LSJ Scripture Refs: LXX.Job.22.14