The term "crossed up" typically means to confuse or mislead someone, but there are several antonyms that can convey the opposite meaning. One antonym could be "clear," meaning that the situation or explanation is easily understood and without confusion. Another antonym could be "transparent," which suggests that everything is visible and there is nothing to hide. A third antonym could be "straightforward," which means that there is a clear path to follow and no ambiguity in the situation. These antonyms offer solutions to avoid being "crossed up" and promote a more straightforward and honest communication.