characterized by a tendency to boast or brag

excessively proud of oneself or one's achievements

आत्म-प्रसन्नता से भरा हुआ

English Usage: The boastful claims of the winning team were hard to take seriously.

Hindi Usage: विजेता टीम के आत्म-प्रसन्नता से भरे दावे को गंभीरता से लेना मुश्किल था।