A person who doesn't like parties and prefers solitude or quieter social settings is often referred to as an "introvert." Introverts are individuals who tend to feel more comfortable and energized in solitary or low-stimulation environments, and they may find large social gatherings, such as parties, to be overwhelming or draining. It's important to note that not all introverts are the same, and their preferences for social interactions can vary. Some may enjoy smaller gatherings or one-on-one interactions while others may prefer spending more time alone.