An antonym for "entrepreneur" is "employee" or "laborer," according to Dictionary.com. The term entrepreneur refers to one who starts a business on his own; he is typically an employer of others.
An entrepreneur is an enterprising person who usually comes up with unique ideas for a business model. According to Dictiornary.com, an entrepreneur is may also be the owner or manager of a business enterprise who, by risk and initiative, attempts to make profits. The opposite of this is a person who goes to work for someone else and does his job without much personal financial risk, i.e., an employee. The word "entrepreneur" comes from the French language where it means "to undertake."