Ginormous is a slang word that means extremely large or huge. Some antonyms for ginormous are small, tiny, tiny, little, miniature, and diminutive. The opposite of ginormous is any word that means small in size, not large or enormous. Other antonyms for ginormous are puny, microscopic, minuscule, wee, small-scale, and modest. These antonyms are useful when you want to describe something that is not enormous, but rather small or insignificant in size. By using a suitable antonym for ginormous, you can greatly enhance the precision of your writing or speech, and avoid over- or under-exaggeration.