The antonymic expressions for the word "backing you" are numerous and varied, but they all convey a lack of support or encouragement. The phrase "forsaking you" indicates a cruel abandonment or betrayal by someone who was previously loyal. Similarly, "opposing you" involves active resistance or condemnation of your ideas or actions. Meanwhile, "ignoring you" suggests a willful neglect or apathy towards your needs or problems. Finally, "abandoning you" makes it clear that there is nobody left to help you, or that you have been left completely on your own. If you find yourself experiencing any of these negative situations, it is important to seek out positive support and encouragement from people who genuinely care about you.