Someone gregarious is naturally friendly and enjoys being around other people. A gregarious person lights up in a crowd, seeks out conversation, and feels energized by social interaction.

Think of the classmate who knows everyone's name by the second week of school, who pulls quiet kids into group activities, and who genuinely seems happiest when surrounded by friends. That's gregariousness in action. It means having a genuine appetite for companionship and social connection, expressed through warm, outgoing behavior.

It can describe animals too. Sheep are gregarious animals because they naturally cluster together. Wolves hunt in packs because they're gregarious. Even flamingos, which gather by the thousands, show gregarious behavior.

Some people are naturally gregarious, while others prefer smaller groups or quiet time alone. A gregarious student might organize group study sessions and feel lonely working alone, while a less gregarious classmate might prefer tackling homework independently.