Final answer:
An antonym for a misanthrope is a philanthropist.
Step-by-step explanation:
An antonym for a misanthrope is a philanthropist. While a misanthrope is someone who dislikes or mistrusts humanity, a philanthropist is someone who actively seeks to promote the well-being of others and believes in the inherent goodness of humanity. They donate their time, money, or resources to charitable causes and strive to make positive changes in society.