behaving in a proud, superior way; (of behaviour etc) showing too much pride in oneself and too little thought for others

having exaggerated self-opinion

feeling or showing confidence

certain, assured

extremely happy, pleased, proud etc

very happy

too confident

confident

full of, showing (too much) self-importance

arrogant, egotistic

claiming (without justification) great ability, qualities or importance

snobbish, conceited

conceited; too proud

snobbish

snobbish

arrogant

without use, value, meaning or result; having too high an opinion of one's looks, abilities etc

egotistical