'Impressive' definitions:

Definition of 'impressive'

From: WordNet
adjective
Making a strong or vivid impression; "an impressive ceremony" [ant: unimpressive]
adjective
Producing a strong effect; "gave an impressive performance as Othello"; "a telling gesture" [syn: impressive, telling]

Definition of 'Impressive'

From: GCIDE
  • Impressive \Im*press"ive\ ([i^]m*pr[e^]s"[i^]v), a. [Cf. F. impressif.]
  • 1. 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. [1913 Webster]
  • 2. Capable of being impressed. [Obs.] --Drayton. -- {Im*press"ive*ly}, adv. -- {Im*press"ive*ness}, n. [1913 Webster]

Synonyms of 'impressive'

From: Moby Thesaurus