The antonyms for the word "are operation" include words like "inaction," "inactivity," "idle," "dormancy," "standstill," "immobility," and "halt." Each of these words represents an opposite meaning to "are operation," which implies a state of activity, motion, or function. While "are operation" suggests the presence of movement or engagement, these antonyms represent a lack of activity, stillness, or stasis. It is important to understand the opposite meanings of a word in order to use it correctly in speech or writing, and to communicate effectively with others.