громадный

adj.

huge; enormous; formidable; gigantic; gigantically; vast; prodigious; mammoth; colossal; giant (of unusually great height or size • a giant cod; a giant fern); hulking; monster; monstrous; mountainous; stupendous; thumping; thundering; immane; tanklike; immeasurable (very great); immense; Cyclopian; Cyclopic; gigantean; immensurable; behemoth (Notburga); humungo (Something extremly large, huge КГА); extensive (MysticKat); mighty; sheer (Дмитрий_Р); cyclopean; humungous (extremely large: " Zesto's restaurant serves humungous burgers. " This minor glitch has turned into a humungous problem for the airline. CALD Alexander Demidov); gargantuan (There is also the tantalising possibility of a deal with India, another potentially gargantuan market for Russian gas. BBC Alexander Demidov); giantlike; great; a whopping; slapping; Cyclopean; terrible; vast (The big stores of London are vast buildings; we will make use of her vast experience

wiktionary.org NessyCyrodiil); dimensionless; multitudinary; multitudinous; unmeasurable

astronomical (VLZ_58); highlandish

inf.

tremendous; whaling; jumbo (Damirules); swingeing (1. large and likely to cause people problems, especially financial problems • swingeing cuts in benefits • swingeing tax increases 2. extremely critical of sb/something • a swingeing attack on government policy. OALD Alexander Demidov); humunculous (urbandictionary.com NGGM)

massive (Alex_Odeychuk)

slang

ginormous (Yanick); moby (Interex)