The term "in trenched" implies that something is strongly established, secure, and deeply ingrained. Therefore, its antonyms would revolve around ideas such as change, flexibility, and adaptability. Some possible antonyms for "in trenched" could be words like "fluid," "variable," "malleable," "plastic," or "transformable." These words describe the opposite of "in trenched" by suggesting that something is not firmly fixed or rigidly set in its ways. They imply that there's still room for movement, adjustment, and modification, which can help people or organizations to evolve, grow, and thrive in uncertain or challenging environments.