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.

Primary Meanings of accessory

a supplementary component that improves capability
someone who helps another person commit a crime
aiding and abetting in a crime
Full Definitions of accessory

n a supplementary component that improves capability

add-on, appurtenance, supplement
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auto accessory
an accessory for an automobile
computer accessory
an accessory for a computer
a small and often standardized accessory to a larger system
fixings, trimmings
the accessories that normally accompany (something or some activity)
gas fitting
the fitting (pipes or valves or meters) that convey gas from the gas main to the gas fixtures of a building
pipe fitting, pipefitting
fitting consisting of threaded pieces of pipe for joining pipes together
an electrical (or electronic) fitting that is connected to a source of power and equipped to receive an insert
Type of:
component, constituent, element
an artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system

n clothing that is worn or carried, but not part of your main clothing

accouterment, accoutrement
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a band to tie or buckle around the body (usually at the waist)
furnishing, trappings
(usually plural) accessory wearing apparel
baldric, baldrick
a wide (ornamented) belt worn over the right shoulder to support a sword or bugle by the left hip
cartridge belt
a broad belt with loops or pockets for holding ammunition
a belt with loops or slots for carrying small hand tools
money belt
belt with a concealed section for holding money
life belt, safety belt, safety harness
belt attaching you to some object as a restraint in order to prevent you from getting hurt
Sam Browne belt
leather belt supported by a strap over the right shoulder
Type of:
article of clothing, clothing, habiliment, vesture, wear, wearable
a covering designed to be worn on a person's body

n someone who helps another person commit a crime

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abetter, abettor
one who helps or encourages or incites another
accessory after the fact
a person who gives assistance or comfort to someone known to be a felon or known to be sought in connection with the commission of a felony
accessory before the fact
a person who procures or advises or commands the commission of a felony but who is not present at its perpetration
accessory during the fact
a person who witnesses a crime but does not try to prevent it
collaborator, confederate, henchman, partner in crime
someone who assists in a plot
Type of:
criminal, crook, felon, malefactor, outlaw
someone who has committed a crime or has been legally convicted of a crime

adj aiding and abetting in a crime

“he was charged with being accessory to the crime”
furnishing support or assistance

adj furnishing added support

adjunct, adjuvant, ancillary, appurtenant, auxiliary
furnishing support or assistance

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