You call a person stubborn.
You can call that person a "singer" or you can call that person a "vocalist."
Due to the wing tattoos he has on each arm.
British,
Avox
A narcissist.
A hymn ...:)?
a person who tells proudly about himself is a boaster or a braggart.
I would rather say that if the person talks about how intelligent they are then i for an adult call it conceded.
hungry
Poor!
Wilhelm Wundt (1832-1920) was the first person to call himself a psychologist. In 1879, he founded one of the first psychological laboratories in Leipzig, Germany.
The phrase "singing his praises" means expressing admiration or praise for someone enthusiastically or with great enthusiasm. It suggests speaking highly of their virtues, accomplishments, or qualities.
Pierre-Joseph Proudhon
A hermit
a specialist
Arrogant, Pompous. A Braggart