The phrase "were in effect" implies that something was operational or enforceable at a certain time. Its antonyms can be described as ineffective, invalid, or nonexistent. If something was not in effect, it might have been proposed, rejected, or expired. On the other hand, if something is currently in effect, its antonyms can be irrelevant, obsolete, or terminated. It is important to understand the context and duration of the phrase to determine its antonyms correctly. Whether it is related to laws, policies, or agreements, knowing the opposite of "were in effect" can help to discern its implications and consequences.