Merriam-Webster Collegiate Dictionary - enormous

 adjective  Etymology: Latin enormis, from e, ex out of + norma rule  Date: 1531  1.  a. archaic abnormal, inordinate  b. exceedingly wicked ; shocking an ~ sin  2. marked by extraordinarily great size, number, or degree; especially exceeding usual bounds or accepted notions  • ~ly adverb  • ~ness noun Synonyms:  ~, immense, huge, vast, gigantic, colossal, mammoth mean exceedingly large. ~ and immense both suggest an exceeding of all ordinary bounds in size or amount or degree, but ~ often adds an implication of abnormality or monstrousness an ~ expense an immense shopping mall. huge commonly suggests an immensity of bulk or amount incurred a huge debt. vast usually suggests immensity of extent the vast Russian steppes. gigantic stresses the contrast with the size of others of the same kind a gigantic sports stadium. colossal applies especially to a human creation of stupendous or incredible dimensions a colossal statue of Lincoln. mammoth suggests both hugeness and ponderousness of bulk a mammoth boulder.