Curiosity is a hunger to explore and a delight in discovery. When we are curious, we approach the world with a child-like habit of poking and prodding and asking questions. We are attracted to new experiences. Rather than pursuing an agenda or a desired set of answers, we follow our questions where they lead.
Socially, curiosity lets us really listen to other people because we want to know who they are. We open ourselves to the morsels of knowledge and experience they can share with us. We relish having discoveries of our own to share.
Curiosity makes us interested in a broad range of information about the world around us, not only that with direct utility. We learn for the joy of learning.