Extended Strong's Greek Lexicon (Abbott-Smith based)
to boast
Usage: κατα-καυχάομαι, -ῶμαι [in LXX: Zec.10:12 (הָלַךְ hith.), Jer.50:11 (עָלַז), Jer.50:38 (הָלַל)* ;] __1. to boast against, exult over: with genitive, Rom.11:18, Jas.2:13; before κατά, with genitive, Jas.3:14 (T, om. κατά). __2. before ἐν, to glory in (Za., l.with, Jer.27:38).† (AS)