The term "inter denominational" refers to the interaction or cooperation between different denominations or religious groups. The antonyms of inter denominational can be categorized into two, namely the opposites of "inter" and "denominational." The antonyms of "inter" could be "intra," "within," or "separate," which mean that religious groups or denominations are operating independently, and there is no cooperation or interaction. On the other hand, the antonyms of "denominational" are "non-denominational," "ecumenical," or "interfaith," which refer to the absence of emphasis on specific religious beliefs, doctrines or practices. Therefore, when choosing a church, one may decide to attend a denominational, interfaith or non-denominational worship service.