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

conceited

offensively self-assertive

cocky

confident

too confident or sure of one's ability etc

self-assured

pleased with oneself or one's ability (and not caring about others)

contented

interested mainly in oneself

thinking very highly of oneself

having or showing a high opinion of oneself

arrogant

often expressing (too much) confidence in one's own opinion

believing very strongly and conveying it

full of, showing (too much) self-importance

arrogant, egotistic

(of behaviour etc) too self-confident or arrogant

self-confident

too pleased with oneself and one's abilities and without kindness for others etc

pleased with oneself

(behaving) like a snob

haughty

conceited; too proud

snobbish

snobbish

arrogant

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

egotistical