Select the most appropriate one-word substitution for the given group of words.

A person having belief that all people are selfishly motivated

Cynic

The most appropriate one-word substitution for the given group of words is cynic.

• Psycho means a person who is mentally ill and possibly dangerous.
• Cynic means a person who believes that people are motivated only by self-interest and that no one is truly good.
• Immature means not having or showing the qualities of a mature person.
• Anti-social means not wanting or enjoying the company of other people.