a statement, speech, that one is or can do better, is richer etc than others

brag; source of pride

to say that one can do better, is richer etc than others

talk boastingly

(an instance of) a display of boldness or courage

boastfulness

the theory that our actions are always caused by the desire to benefit ourselves

self-centeredness

to show off in order to attract attention to (oneself, one's possessions)

make an exhibition, show off

a mental illness in which a person has exaggerated ideas of her or his importance, power, wealth etc

self-centeredness

selfishness

egotism

a feather, especially a large one used as a decoration

pride

(to walk in) a self-important manner

show off; walk pompously