Complementing and Adjunct

noun

• Something added to another thing but not an essential part of it.
• A person who is an assistant or subordinate to another.
• 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.

adjective

• Furnishing added support.
  • usage: "an ancillary pump"; "an adjuvant discipline to forms of mysticism"; "The mind and emotions are auxiliary to each other"
  • synonyms: accessory, ancillary, adjuvant, appurtenant, auxiliary
• Of or relating to a person who is subordinate to another.
  • synonyms: assistant

• (a.) Conjoined; attending; consequent.
• (n.) Something joined or added to another thing, but not essentially a part of it.
• (n.) A person joined to another in some duty or service; a colleague; an associate.
• (n.) A word or words added to quality or amplify the force of other words; as, the History of the American Revolution, where the words in italics are the adjunct or adjuncts of "History.".
• (n.) A quality or property of the body or the mind, whether natural or acquired; as, color, in the body, judgment in the mind.
• (n.) A key or scale closely related to another as principal; a relative or attendant key. [R.] See Attendant keys, under Attendant, a.