Su jactancia sobre sus logros era evidente.
His boastfulness about his achievements was evident.
La jactancia no es una cualidad que admire en una persona.
Boastfulness is not a quality I admire in a person.
A pesar de su jactancia, no logró impresionar a nadie en la reunión.
Despite his boastfulness, he didn't manage to impress anyone at the meeting.