He has an 'impressive' vocabulary for a 10-year-old.
a large and 'impressive' [='imposing'] building
Her first performance was very 'impressive'.
(..) There is not a person alive who's seen it. It's obvious, isn't it? We have to talk to someone who's dead. It's very impressive, isn't it? If you've to find her, you'll find her down there. - Aren't you coming? - No. I think it's best if (..)2011 Harry Potter and the Deathly Hallows: Part 2