Opposites for the phrase "are a party to" include phrases such as "not involved" or "unrelated to." Antonyms for this phrase may be useful in describing situations where one person or group is not included in an activity or agreement. Some examples of antonyms include "disengaged," "unconcerned," or "not privy to." These antonyms can be used when discussing legal documents, contracts, or other arrangements where one party is not included. By highlighting the opposite of "are a party to," a writer or speaker can effectively convey the exclusion or lack of involvement of a particular individual or group.