"Nomen abstractum" is a Latin term that refers to abstract nouns or names that represent intangible concepts or ideas. Some antonyms for "nomen abstractum" might include concrete nouns, which represent physical and tangible objects such as table, chair, and house. Other antonyms might include proper nouns, which refer to specific people, places, or things, such as Jane, London, or Coca-Cola. Another possible antonym might be adjectives, which describe or modify nouns, such as beautiful, tall, or fast. These antonyms represent different linguistic categories that contrast with the abstract nouns denoted by "nomen abstractum.