Which word describes a wasteful person or spendthrift?

The word "wastrel" specifically refers to a person who is wasteful or extravagant, particularly in their spending habits. This term is often used to describe someone who squanders their resources or wealth without regard for the consequences. In the context of the question, "wastrel" aligns perfectly with the idea of a spendthrift, as both terms denote a lack of prudence in managing money, resulting in financial squandering.

In contrast, a philanthropist is someone who seeks to promote the welfare of others, typically through the donation of money to good causes, which implies a more responsible use of resources rather than wastefulness. An investor is focused on putting money into assets with the expectation of achieving a profit, indicating a strategic approach to finances. An entrepreneur refers to someone who starts and runs a business, usually involving careful planning and investment, rather than wasteful spending.