Making, or tending to make, an impression; having power to impress; adapted to excite attention and feeling, to touch the sensibilities, or affect the conscience; as, an impressive discourse; an impressive scene.
There's this misconception that the Navy is this cruise ship, and you get to go out and sail around, and every now and then, you have to swab the deck. But, no, it is a very impressive group of young people that live at sea, in this place that's very uncomfortable. They exude a pride that is well-deserved. Tom Hanks
Scientific views end in awe and mystery, lost at the edge in uncertainty, but they appear to be so deep and so impressive that the theory that it is all arranged as a stage for God to watch man's struggle for good and evil seems inadequate. Richard P. Feynman