When it comes to the phrase "owe support", there are a handful of synonyms that can be used to convey a similar sentiment. For instance, you might say that you are responsible for providing assistance to someone, or that you are obligated to lend a helping hand. Alternatively, you might express a desire to offer aid or comfort to another person, or acknowledge that you have a duty to stand by someone in need. Additionally, you might use phrases such as "have a responsibility to", "need to be there for", or "should support" to convey a sense of obligation or duty towards another person.