adjunct

Adjective

• of or relating to a person who is subordinate to another

• furnishing added support
  • an ancillary pump
    
  • an adjuvant discipline to forms of mysticism
    
  • The mind and emotions are auxiliary to each other
    

Noun

• a construction that can be used to extend the meaning of a word or phrase but is not one of the main constituents of a sentence

• a person who is an assistant or subordinate to another

• something added to another thing but not an essential part of it

Related words

• Synonyms: 
  assistant , accessory , ancillary , adjuvant , appurtenant , auxiliary