He has an 'impressive' vocabulary for a 10-year-old.
a large and 'impressive' [='imposing'] building
Her first performance was very 'impressive'.
(..) its that nothing is more powerful than a young boys wish except an apache helicopter... an apache helicopter has machine guns and missiles it is an unbelievably impressive complement of weaponry. An absolute death machine well as it turned out, John had picked a perfect night to make a wish (..)2012 Ted