Usage: 2 forms in 2 verses
Form Translated As     In Verse(s)
κατεκάμφθην bent down LXX.Ps.38.6
κατέκαμψαν bent down LXX.Ps.57.6

Liddell-Scott-Jones

κατακάμπτω (katakamptō) to bend down G:V

κατακάμπτω,

bend down, so as to be concave, ἐξ ὀρθοῦ κ. [Refs 5th c.BC+]:—passive, opposed to ἀνακάμπτομαι, [Refs 4th c.BC+]: perfect participle passive -κεκαμμένος bending over, conjecture in [Refs 4th c.BC+]

__II cover with a vault, λίθῳ κατακαμφθέντες [Refs 1st c.BC+]
__III metaphorically, κ. ἐλπίδας bend down, overthrow hopes, [Refs 5th c.BC+]:—passive, to be bent (by entreaty), [Refs 4th c.BC+]