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1. Functioning in a supporting capacity
   "the main library and its subsidiary branches";
   - auxiliary, supplemental, supplementary
    
2. Lower in rank or importance
   - subordinate, low-level

1. An assistant subject to the authority or control of another
   - subordinate, underling, foot soldier, understrapper [informal]
    
2. A company that is completely controlled by another company
   - subsidiary company

Derived forms: subsidiaries

See also: adjunct, assistant, associate, inferior, position, secondary, status, subordinate, under

Type of: aid, assistant, company, help, helper, supporter

Encyclopedia: Subsidiary