Boastfully means saying something with extreme pride and arrogance.
boastfully - speak with excessive pride
The boy spoke boastfully of his football prowess.
John spoke boastfully of how he had scored the winning goal in the football match
Boastfully she .....
"She boastfully told Jamie that she just got a new dog" is one way of doing it. To be boastful means that you brag a lot.
arrogantly, proudly, loftily, boastfully
The English word boast means to brag or make a type of ostentatious speech. The word boastfully is a verb used to describe someone acting in a bragging manner.
Showing too much pride boastfully means excessively displaying a sense of self-importance or superiority in a way that is overly proud and arrogant. It can come across as offensive or off-putting to others.
You could say they were blowing (or tooting) their own horn.
To talk about one's self, or things pertaining to one's self, in a manner intended to excite admiration, envy, or wonder; to talk boastfully; to boast; -- often followed by of; as, to brag of one's exploits, courage, or money, or of the great things one intends to do., To boast of., A boast or boasting; bragging; ostentatious pretense or self glorification., The thing which is boasted of., A game at cards similar to bluff., Brisk; full of spirits; boasting; pretentious; conceited., Proudly; boastfully.
Someone or some people may see you have a high potential to be very successful in life and often this can be the truth if the person who has a potential sees it in themself.
Definition is the same as meaning.