The antonyms for the phrase "coming against" can vary based on the context it is being used in. If used in the sense of opposing or confronting an idea, belief, or argument, the antonyms could be agreeing, approving, or supporting. In the context of physical actions such as attacking or enforcing laws, the antonyms could be retreating, surrendering, or yielding. If used in the sense of collaborating or working together, the antonyms could be isolating, dividing, or ignoring. The use of antonyms can be helpful in creating clear and concise communication that effectively conveys the intended meaning.