Synonyms of impressive

1 Syllable
thest, proud, grand, ther, royal, cool, beaut, deep
2 Syllables
prime, touching, stirring, big-time, potent, profound, striking, theatric, thrilling, lavish, poignant, big-gun, big-wheel, hot-dog, moving, stunning, noble, telling, drop-dead, gorgeous, scenic, trenchant, prouder, doozie, rousing, august, superb, proudest, lulu, sumptuous, well-done, world-class, salient, namest, plushier, vital, steller, hotdog, namer, firstclass, plushy, splendid
3 Syllables
important, notable, upscale, mind-bending, luxurious, influential, big-league, heartstopping, centerfold, powerful, commoving, inspiring, imposing, good-looking, handsomest, majestic, emphatic, handsomer, prestigious, convincing, palatial, forcible, ballbuster, momentous, magnific, grandiose, excited, dramatic, commanding, towering, baronial, gilt-edged, impactful, breathtaking, stately, massive, absorbing, affecting, outstanding, towery, exciting, arresting, eloquent, fearsome, well-pleased, herculean, hundred-proof, out-of-sight, intense
4 Syllables
believable, impassioned, tragicomic, profusive, histrionical, awesome, effective, persuasive, magnifico, ceremonious, penetrating, recreative, convictive, astonishing, consequential, interesting, memorable, entertaining, monumental, awe-inspiring, magnificent, out-of-this-world, remarkable
5 Syllables
stimulative, high-falutin', pleasure-loving, extraordinary, highfalutin', inspirational