FROM STRONG’S GREEK DICTIONARY (1890)

Strong’s Greek Dictionary (1890) — public domain, printed whole.

kauchaomai καυχάομαι — kow-khah'-om-ahee — from some (obsolete) base akin to that of aucheo (to boast) and 2172; to vaunt (in a good or a bad sense):--(make) boast, glory, joy, rejoice.

see GREEK for 2172