Choose the word that can substitute the given group of words.

A lover of oneself, of one's advancement

Egoist

The word that can substitute the given group of words "a lover of oneself, of one's advancement" is egoist.

• Philistine is a person who is indifferent to or hostile to culture and the arts.
• Mercenary is a person who is motivated by financial gain.
• Cynic is a person who believes that people are motivated by self-interest and that nothing good can come from human nature.

The word egoist is derived from the Greek word ego, meaning "self". It is a person who is excessively concerned with their own well-being and advancement. Egoists often have a grandiose sense of self-importance and a lack of empathy for others.