Dictionary

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. Said of people and things, and, when of people, usually in a bad sense

Example: She was accessory to the riot.

Assisting a crime without actually participating in committing the crime itself.

Present in a minor amount, and not essential.

Something that belongs to part of another main thing; something additional and subordinate, an attachment.

Example: the accessories of a mobile phone

An article that completes one's basic outfit, such as a scarf or gloves.

A person who is not present at a crime, but contributes to it as an assistant or instigator.

Something in a work of art without being indispensably necessary, for example solely ornamental parts.