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n.
a person who contributes to the fulfillment of a need or furtherance of an effort or purpose; "my invaluable assistant"; "they hired additional help to finish the work"
adj.
compliant and obedient to authority; "editors and journalists who express opinions in print that are opposed to the interests of the rich are dismissed and replaced by subservient ones"-G. B. Shaw
adj.
furnishing added support; "an ancillary pump"; "an adjuvant discipline to forms of mysticism"; "The mind and emotions are auxiliary to each other"
adj.
not perfect; defective or inadequate; "had only an imperfect understanding of his responsibilities"; "imperfect mortals"; "drainage here is imperfect"