I. ˌco-deˈpendent 1 BrE AmE , codependent adjective
someone who is co-dependent thinks that they cannot be happy or successful without another person, especially someone with a problem, and so tries to keep that person happy without taking care of their own needs, in a way that seems unhealthy
—co-dependence , codependency noun [uncountable]
II. co-dependent 2 BrE AmE , codependent noun [countable]
someone who is co-dependent