The word "inductee" refers to a person who is formally admitted into a particular organization or society. While there are many synonyms for this word, such as initiate, newcomer, and rookie, there are very few direct antonyms. Some possible antonyms for "inductee" might include terms like outsider, expellee, or dissident, each of which implies a negative relation to the organization or group in question. Other less direct antonyms might include words like retiree, emeritus, or veteran, which suggest a long-standing or completed membership rather than a new one. In general, the concept of antonyms is less applicable to terms related to membership or participation than it is to more concrete concepts like size, color, or emotion.