mea-culpa (noun, interjection) mea culpa: guilt acknowledgment
Sinonime: Brobdingnagian, Herculean, behemoth, colossal, elephantine, enormous, gargantuan, gigantesque, gigantic, ginormous, great, huge, hulking, humongous, humungous, immense, jumbo, large, mammoth, massive, monster, monstrous, monumental, mountainous, prodigious, pythonic, sizable, stupendous, titanic, tremendous, vast