Capable of impression; having nice sensibility; impressible; tender; sensitive; as, children are more susceptible than adults; a man of a susceptible heart
If you are susceptible to a disease or injury, you are very likely to be affected by it. Walking with weights makes the shoulders very susceptible to injury = vulnerable
If you are susceptible to something or someone, you are very likely to be influenced by them. Young people are the most susceptible to advertisements James was extremely susceptible to flattery
vulnerable to or potentially able to contract a disease Also refers to a microorganism that is vulnerable to the effects of a drug Contrast with resistant