adjective

1. of an extent, amount, or intensity considerably above average. "the article was of great interest" синонимы: considerable, substantial, pronounced, sizeable, significant, appreciable, serious, exceptional, inordinate, extraordinary, special, large, big, extensive, expansive, broad, wide, ample, spacious, vast, immense, huge, enormous, gigantic, massive, colossal, mammoth, monstrous, prodigious, tremendous, stupendous, unlimited, boundless, cosmic, humongous, whopping, whopping great, thumping, thumping great, dirty great, whacking, whacking great, ginormous
2. of ability, quality, or eminence considerably above average. "the great Italian conductor" синонимы: prominent, eminent, pre-eminent, important, distinguished, august, illustrious, noble, celebrated, noted, notable, noteworthy, famous, famed, honoured, esteemed, revered, renowned, acclaimed, admired, well known, leading, top, high, high-ranking, chief, major, main, principal, central, gifted, talented, outstanding, foremost, remarkable, exceptional, highly rated, first-rate, incomparable, superlative, unsurpassed, unexcelled, matchless, peerless, star, arch-, major league
3. used before a noun to emphasize a particular description of someone or something. "I was a great fan of Hank's" синонимы: enthusiastic, eager, keen, zealous, devoted, ardent, fervent, fanatical, passionate, dedicated, diligent, assiduous, intent, habitual, active, vehement, hearty, wholehearted, committed, warm
4. (in names of family relationships) denoting one degree further removed upwards or downwards. "great-aunt"
5. (of two people) on very close or intimate terms. "one of the boys was very great with her"

noun

1. an important or distinguished person. "the Beatles, Bob Dylan, all the greats"
2. another term for Literae Humaniores.

adverb

very well; excellently. "we played awful, they played great"