What is the definition or description of: shyness?

Prefer to be alone: People range in how they interact with others from very introverted or shy to very outgoing. Those that are shy tend to want to be by themselves, a introspective and thoughtful, anxious in their interactions with others and may prefer solitary activities rather than social ones. These are style differences and fall in the range of "normal." Some people are shy sometimes and outgoing other times