Synonyms of impressive

1. impressive (vs. unimpressive), amazing, awe-inspiring, awesome, awful, awing, arresting, sensational, stunning, astonishing, astounding, staggering, stupefying, baronial, imposing, noble, stately, dazzling, eye-popping, fulgurant, fulgurous, dramatic, spectacular, striking, expansive, grand, heroic, formidable, gallant, lofty, majestic, proud, brilliant, glorious, magnificent, splendid, grandiose, important-looking, mind-boggling, palatial, signal, thundering, moving: usage: making a strong or vivid impression; "an impressive ceremony"
2. impressive, telling, effective (vs. ineffective), effectual, efficacious: usage: producing a strong effect; "gave an impressive performance as Othello"; "a telling gesture"