impressive

adj. grand, imposing, striking, magnificent

Impressive (1968-04-15 - 1995-03-20) was born an Appendix American Quarter Horse, however earned his full AQHA registration in 1971. He was the 1974 World Champion Open Aged halter stallion, the first such World Champion in his breed, despite carrying only 48 halter points in total. He is famous for his highly successful progeny, having sired 2,250 foals. Nearly thirty of his offspring went on to be World Champions themselves.
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Adjective
1. making a strong or vivid impression; "an impressive ceremony"
(antonym) unimpressive
(similar) amazing, awe-inspiring, awesome, awful, awing
(see-also) moving
2. producing a strong effect; "gave an impressive performance as Othello"; "a telling gesture"
(synonym) telling
(similar) effective, effectual, efficacious

(a.)
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.
  

(a.)
Capable of being impressed.
  

  permissive