CURIOSITY

(INTEREST) [noun] [U] - an eager desire to know or learn about somethingto arouse/excite/satisfy someone's curiosityI'm burning with curiosity - you must tell me who's won!She decided to call her ex-boyfriend out of curiosity. "We try to develop the natural curiosity of each child," said the teacher."Why do you ask?" "Oh, just idle curiosity (= for no particular reason)."(saying) 'Curiosity killed the cat' is said to someone to stop them asking too many questions.