Synonyms for Grand:
•impressive, great (adjective)
admirable, ambitious, august, awe-inspiring, dignified, excellent, grandiose, haughty, illustrious, imposing, large, lofty, magnificent, majestic, monumental, noble, ostentatious, regal, rich, splendid, stately, superb.
ample, awesome, baggy, big, bulky, capacious, cavernous, colossal, comprehensive, copious, elephantine, enormous, expansive, extensive, gargantuan, generous, giant, gigantic, grandiose, great, huge, humongous, immense, impressive, large, lofty, magnificent, majestic, mammoth, massive, princely, prodigious, roomy, sizable, soaring, spacious, towering, tremendous, vast, voluminous.
•most important (adjective)
chief, grave, mighty, preeminent, transcendent.
aristocratic, august, baronial, celebrated, courtly, dignified, distinguished, heroic, imperial, imposing, kingly, knightly, ladylike, lordly, magisterial, noble, patrician, regal, royal, sovereign, stately, queen-like, great, majestic, princely.
assured, conceited, condescending, confident, crowing, egoistic, haughty, high-and-mighty, high-handed, hoity-toity, huffy, narcissistic, ostentatious, proud, smug, vain, Preening, self-glorying, swellheaded.
n.attractive, cheerful, enjoyable, nice, pleasant, pleasing, pleasurable, relaxing, restful. admirable, commendable, enviable, excellent, good, noteworthy, praiseworthy, respected, superb, first class. basic, elementary, splendid, Magnific. boastful, bombastic, dramatic, eloquent, flamboyant, flash, grandly, high, style, trophy, BLING. buck, c-note, fin, five, five-spot, fiver, greenback, high-ranking, rise, the gray dollar, the grey pound. •exalted (noun)
ambitious, aspiring, awe-inspiring, chief, commanding, extraordinary, foremost, grave, high, illustrious, low, mighty, monumental, overwhelming, poor, preeminent, sensational, stupendous, transcendent, vaulting.
•five or more (noun)
billion, decade, decennium, dozen, fourscore, gross, hexad, hundred, hundredfold, million, octagon, octave, octavo, octet, score, septuple, sevenfold, sextuple, sixfold, teens, thousand, trillion, Duodecimo, Jillion.
august, chiliad, expansive, grand piano, heroic, impressive, lordly, noble, one thousand, thou, thousand, yard, G, K, M, 1000.
•musical instruments (noun)
accordion, baby grand, balalaika, banjo, barrel organ, bass, bass guitar, bassoon, bagpipes, air guitar.
boastful, bombastic, c-note, five-spot, fiver, grandly, greenback, high-ranking, Magnific. five, flamboyant, trophy. eloquent, fin, BLING. dramatic. buck. high. flash. •breathtaking
•Other relevant words:
accordion, admirable, ambitious, aristocratic, aspiring, attractive, awe-inspiring, baby grand, balalaika, banjo, basic, bass, bassoon, boastful, bombastic, buck, c-note, cheerful, chief, chiliad, commanding, commendable, dramatic, elementary, eloquent, enjoyable, enviable, excellent, extraordinary, fin, five, five-spot, fiver, flamboyant, flash, foremost, good, grand piano, grandly, grave, greenback, high, high-ranking, illustrious, mighty, monumental, nice, noteworthy, one thousand, overwhelming, pleasant, pleasing, pleasurable, poor, praiseworthy, preeminent, relaxing, respected, restful, rich, rise, sensational, splendid, stupendous, style, superb, thou, transcendent, trophy, vaulting, yard, G, K, M, Magnific, first class, 1000, BLING, bagpipes.