Lexical Definition

‎κατακαυχάομαι‎ katakaucháomai (kat-ak-ow-khah'-om-ahee) to boast G:V
from ‎κατά‎ and ‎καυχάομαι‎

boast (against), glory, rejoice against.

Usage: 6 forms in 6 verses
Form Translated As     In Verse(s)
κατεκαυχώντο they gloried over LXX.Jer.50.38
κατεκαυχάσθε gloried over LXX.Jer.50.11
κατακαυχῶ do boast Rom.11.18
κατακαυχᾶται it triumphs over Jas.2.13
κατακαυχᾶσθε do boast Jas.3.14
κατακαυχᾶσαι you boast against Rom.11.18

Abbott-Smith

κατα-καυχάομαι, -ῶμαι, [in LXX: Za 10:12 (הלךְ hith.), Je 27 (50):11* (עלז), Je 27 (50):38 (הלל)*;]
1. to boast against, exult over: c. gen., Ro 11:18, Ja 2:13; seq. κατά, c. gen., Ja 3:14 (T, om. κατά).
2. seq. ἐν, to glory in (Za 10:12, Je 27:38*).†

Abbott-Smith References

Book Refs
Jeremiah 27:38* · 50:11* · 50:38
Zechariah 10:12
Romans 11:18
James 2:13 · 3:14

Liddell-Scott-Jones

κατακαυχάομαι,

boast against one, exult over him, τινος [NT+5th c.BC+]; κ. ἔν τινι to glory in it, [LXX]

LSJ Scripture Refs: Rom.11.18Jas.3.14LXX.Zech.10.12