Learner's definition of CURIOUS
[more curious; most curious]
1 : having a desire to learn or know more about something or someone
The cat was naturally curious about its new surroundings.
They were curious to find out who won the game.
We're curious about why you never called us.
The curious [=inquisitive] reader can find more information in the back of the book.
I'm curious to know more about her.
2 : strange, unusual, or unexpected
She found a curious old clock in the attic.
That's curious [=weird, strange, odd]—I thought I left my keys right here.
The birds were engaged in some curious behavior.
Their music is a curious blend of disco and rock.
By a curious coincidence, they bought a house the same day their old one burned down.
The story of what really happened to them that day gets curiouser and curiouser. [=stranger and stranger]