accessory

American  

[ak-ses-uh-ree] / ækˈsɛs ə ri /

noun

accessories plural

1. a subordinate or supplementary part, object, or the like, used mainly for convenience, attractiveness, safety, etc., as a spotlight on an automobile or a lens cover on a camera.

2. an article or set of articles of dress, as gloves, earrings, or a scarf, that adds completeness, convenience, attractiveness, etc., to one's basic outfit.

3. Law.

   1. Also called accessory before the fact.  a person who, though not present during the commission of a felony, is guilty of having aided and abetted another, who committed the felony.

   2. Also called accessory after the fact.  a person who knowingly conceals or assists another who has committed a felony.

   Synonyms:

   accomplice

4. Anatomy. accessory nerve.

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adjective

1. contributing to a general effect; supplementary; subsidiary.

2. Law. giving aid as an accessory.

accessory British  

/ ˌæksɛˈsɔːrɪəl, əkˈsɛsərɪ /

noun

1. a supplementary part or object, as of a car, appliance, etc

2. (often plural) a small accompanying item of dress, esp of women's dress

3. a person who incites someone to commit a crime or assists the perpetrator of a crime, either before or during its commission

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adjective

1. supplementary; additional; subordinate

2. assisting in or having knowledge of an act, esp a crime

Synonym Usage

See addition.

Other Word Forms

Derived Forms

• accessoriness
  noun
• accessorial
  adjective
• interaccessory
  adjective
• nonaccessory
  adjective
• accessorily
  adverb

Inflected Forms

Nouns

• accessories
  plural

Etymology

Origin of accessory

First recorded in 1400–50; late Middle English accessorie (from Middle French ), from Medieval Latin accessōrius. See accede, -tory ¹

Explanation

Whether we're talking about a fog light for your boat or just a nice hat to go with your boating outfit, an accessory is something you add to something else to make it better. An accessory can be any piece of clothing that you wear or carry as long as it isn't part of the main outfit. You can also use the word to refer to someone who helps someone else commit a crime. So the guy who distracted the old lady while another guy grabbed her purse? He was the accessory to the theft of an accessory.

Example Sentences

Meta has enlisted Kylie Jenner in its campaign to convince us that Meta Glasses are a hot girlboss accessory.

From Slate • Jul. 8, 2026

They then set up separate appointments, posing as clients seeking build and demolition work for an accessory dwelling unit at a Pacific Palisades property.

From Los Angeles Times • Jul. 4, 2026

Still, they left enough of an impression from the bars of Back Bay to the stands at Fenway Park that Boston’s hottest accessory this summer might just be a set bagpipes.

From The Wall Street Journal • Jun. 26, 2026

"There were things on my side that could have been looked into much sooner, rather than treating me as an accessory to the process."

From BBC • Jun. 26, 2026

The purse—sorry, masculine accessory bag—was rainbow tie-dyed with a peace symbol stitched in wooden beads and the slogan Hug the Whole World.

From "The Son of Neptune" by Rick Riordan

Related Words

• adornment
• appliance
• component
• decoration