in support of, in aid of, in promotion of, in furtherance of, in favor of, to encourage, to foster
supporting a cause - advocating a cause - championing a cause - promoting a cause - endorsing a cause - standing behind a cause
“Backing a cause” means actively supporting a particular issue, movement, organization, or set of values. It usually goes beyond passive agreement and involves concrete actions, such as donating money, volunteering time, spreading awareness, or advocating for change. People backing a cause often identify strongly with its goals and are willing to invest effort, resources, or reputation to help it succeed. The cause can be social, political, environmental, cultural, or humanitarian. Backing a cause can be done individually or as part of a group and may range from small, local initiatives to large, global campaigns that aim to influence public opinion or policy.