Usage: 3 forms in 3 verses
Form Translated As     In Verse(s)
αποκλαύσομαί I shall weep LXX.Jer.48.32
αποκλαιόμενοσ weeping LXX.Prov.26.24
αποκλαιομένη weeping LXX.Jer.31.15

Liddell-Scott-Jones

ἀποκλαίω (apoklaiō) to weep G:V

ἀποκλαίω,

Attic dialect ἀποκλάω [], future -κλαύσομαι: aorist -έκλαυσα:— weep aloud, [Refs 5th c.BC+]; . στόνον[Refs 5th c.BC+]

__2 . τινά or τι bewail much, mourn deeply for, [Refs 6th c.BC+] —middle, ἀποκλαύσασθαι κακά bewail one/s woes, [Refs 5th c.BC+]
__II middle, also, cease to wail, [Refs 2nd c.AD+]