Isn't this an almost impossible question to answer?!
I have always been Curious. (And you?)
I would have to also say adaptable and happy.
My husband says I'm a Contrarian (I'm not really), and my dad says There's No Use Arguing with me (debating), and my mother once accused me of Swanning Around. (I was 15 and had never heard this term).
But I don't think those are the terms they would use if they could only pick one! Those are just the ones they use when I am being a pain! My husband says I am the easiest person to be around, the best dancer, and very tolerant. My dad says I can always make him laugh. My mom says I am her best friend.