The belief that self-interest provides the proper basis for moral behavior.
Conceit or vanity
Excessively high regard for one's own importance or station; conceit.
An unduly high opinion of oneself.
Find another word for bigheadedness. In this page you can discover 6 synonyms, antonyms, idiomatic expressions, and related words for bigheadedness, like: egoism, egotism, self-importance, bighead, swelled head and self-love.