The word incumbencies refers to the duties or responsibilities that come with a particular job or position. There are several synonyms for this word, including obligations, responsibilities, mandates, tasks, and duties. These words all refer to the work that needs to be done in order to fulfill the requirements of a particular role or position. Other synonyms for incumbencies include expectations, requirements, and commitments. All of these words suggest that there is a level of responsibility that comes with holding a certain job or position, and that there are certain tasks or duties that must be completed in order to meet those responsibilities.