Inquisitiveness; the tendency to ask and learn about things by asking questions, investigating, or exploring.
"Her boundless curiosity led her to investigate every strange noise she heard in the old house."
In plain English: Curiosity is when you want to know more about something because it interests you.
"His curiosity led him to open every drawer in the kitchen while his mother was away."
Usage: Use curiosity to describe an active desire to know more through investigation rather than just passive interest in something strange. It often functions as a motivating force that drives people to explore new topics or solve mysteries.
The word curiosity entered Middle English as a variant form derived directly from the French and ultimately from the Latin for "care" or "concern." It gradually replaced an older native term to describe the quality of being curious, rather than simply meaning the same thing it does today.