He has an 'impressive' vocabulary for a 10-year-old.
a large and 'impressive' [='imposing'] building
Her first performance was very 'impressive'.
(..) - Coffee, my lady? - Yes, please. Thank you. - All right, man! - Look at you! - That's pretty impressive. - Yay, Sammy! All right! Oh, buddy. Your shirt's leaking. Oh, no, that's... Apologies. (..)2011 Friends with Benefits
(..) How is a guy like you single? I've just been waiting for someone to come up to me in the park and compliment me for looking at the trees and not the sunbathers. I meant it. It was impressive. Actually, if I'm gonna be completely honest with you, I was sleeping standing up. I worked hours straight. (..)2011 Friends with Benefits