Histrion is a word with Greek origins, which means an actor or performer. It is often used in a derogatory manner to describe a person who behaves in a theatrical or exaggerated manner. There are many synonyms for histrion that can be used to describe someone who is overly dramatic. Some of the synonyms include drama queen, ham, melodramatic, attention seeker, show-off, diva, and grandstander. These words can be used to describe someone who is excessively theatrical, or who seeks attention for their behavior. While these words can be used in a negative context, they can also be used in a playful or teasing manner among friends.