Theodore Herman Albert Dreiser was an American novelist and journalist known for his naturalistic portrayal of human experience and his keen observation of social issues. There are many synonyms for Dreiser, such as writer, author, novelist, journalist, and social critic. His works were often called gritty, realistic, and socially conscious, making him a pioneer of modern American literature. Some of his most famous works include "Sister Carrie", "An American Tragedy", and "The Financier". Despite facing harsh criticism during his lifetime, Dreiser's works continue to be celebrated for their unflinching portrayals of human nature and society.