1. mammoth, gigantic, colossal; vast; stupendous; bulky. Huge, enormous, immense, tremendous imply great magnitude. Huge implies massiveness, bulkiness, or even shapelessness: a huge mass of rock; a huge collection of antiques. Enormous, literally out of the norm, applies to what exceeds in extent, magnitude, or degree, a norm or standard: an enormous iceberg. Tremendous, in informal use, applies to anything so huge as to be astonishing or to inspire awe: a tremendous amount of equipment. Immense, literally not measurable, is particularly applicable to what is exceedingly great, without reference to a standard: immense buildings. All are used figuratively: a huge success; enormous curiosity; tremendous effort; immense joy.