Impressive
Part of speech: adjective
Definition: 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. Capable of being impressed. appealing
Example sentence: Thunder is good, thunder is impressive; but it is lightning that does the work.
Grandiose
Part of speech: adjective
Definition: large and impressive, in size, scope or extentpompous or pretentious
Example sentence: I don't make grandiose, prophetic statements in my songs.