When expressing support or agreement with something, it can be helpful to use synonyms to vary your language and avoid repetition. Some synonyms for "in support of" include "in favor of," "in agreement with," "backing," "advocating," "endorsing," and "encouraging." By using different phrases, you can emphasize how strongly you support something or explore different aspects of your support. For example, "advocating" could imply active involvement in promoting a position, while "encouraging" could suggest providing moral support or motivation. Using synonyms can help you communicate more effectively and demonstrate a nuanced understanding of your position.