Accessory

1. Having a secondary, supplementary or subordinate function by accompanying as a subordinate; aiding in a secondary way; being additional; being connected as an incident or subordinate to a principal; contributing or being contributory.
2. (law) Assisting a crime without actually participating in committing the crime itself.
3. Present in a minor amount, and not essential.

Synonyms

• (having a secondary function): accompanying, contributory, auxiliary, subsidiary, subservient, additional, acceding