"Am subject to" is a phrase that means to be susceptible or vulnerable to something, or to be governed or regulated by something. There are several synonyms that can be used in place of this phrase, including "liable to," "prone to," "at the mercy of," "under the control of," "regulated by," and "governed by." Depending on the context, other synonyms may also be appropriate, such as "affected by," "influenced by," or "guided by." By using synonyms for "am subject to," writers can add variety and clarity to their language, and better convey their intended meanings.