solipsistic
Meaning: believing that oneself is all that exists
Usage: Colette’s solipsistic attitude completely ignored the plight of the homeless people on the street.
bombastic
Meaning: excessively confident, pompous
Usage: The singer’s bombastic performance disgusted the crowd.
dogmatic
Meaning: aggressively and arrogantly certain about unproved principles
Usage: His dogmatic claim that his method was the only correct one frustrated the group.
haughty
Meaning: disdainfully proud
Usage: The superstar’s haughty dismissal of her costars will backfire on her someday.