The antonyms for the word "de-nomination" are "designation," "identification," "classification," and "naming." While de-nomination refers to the act of removing a name or label from something, the aforementioned antonyms refer to the act of giving a name or label to something. Designation is the action of designating or appointing someone or something for a particular purpose or role. Identification refers to the recognition or identification of something or someone, either by appearance or by some other means. Classification refers to the arrangement of things or people into groups based on similarities or differences. Naming, on the other hand, denotes the act of giving something a particular name or label.