Miserabilist is a term used to describe a person who is always seeing the negative side of things and finds joy in misery. However, there are many synonyms for this word that can be used to describe such a person. Some of these synonyms include pessimist, cynic, defeatist, sadist, fatalist, gloomster, downer, and party pooper. These words are often used to describe people who tend to be negative, cynical or pessimistic and see the glass as half empty. They tend to bring down the mood of others around them and can be seen as a buzzkill. It's important to remember that we all have our ups and downs, but being a constant miserabilist is no fun for anyone.