Synonyms of gigantic in English:

gigantic


See US English definition of gigantic

See UK English definition of gigantic

See Spanish definition of gigantesco

adjective

1‘the college is a gigantic Victorian building’

SYNONYMS
huge, enormous, vast, extensive, expansive, broad, wide
very big, very large, great, giant, massive, colossal, mammoth, immense, tremendous, mighty, stupendous, monumental
boundless, immeasurable, limitless, infinite, cosmic
epic, prodigious, mountainous, monstrous, titanic, towering, elephantine, king-sized, king-size, gargantuan, Herculean, Brobdingnagian, substantial
informal mega, monster, whopping, whopping great, thumping, thumping great, humongous, jumbo, hulking, bumper, astronomical, astronomic
British informal whacking, whacking great, ginormous
ANTONYMS

tiny