vaunter
/ˈvɔntər/Definitions
1. noun
A person who boasts or shows off, typically in a proud or arrogant manner.
“The vaunter of the group was trying to impress everyone with his fake stories.”
2. verb
To boast or show off, especially in a proud or arrogant manner.
“He began to vaunt his wealth and status in front of the others.”