Strong's G4068 · Greek

περπερεύομαι

perpereuomai · per-per-yoo'-om-ahee

middle voice from perperos (braggart; perhaps by reduplication of the base of 4008); to boast

Scholarly Lexicons

Abbott-Smith Manual Greek Lexicon

 1 *† περπερεύομαι ( περπερος , vainglorious ), to boast or vaunt oneself : I Co 13:4 (elsewh. only in Antonin.; v. Abbott, Essays , 87).† 

G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain