This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. Someone who accedes to some act, now especially a crime; one who contributes as an assistant or instigator to the commission of an offense.

adj. Accompanying as a subordinate; additional; accessory; especially, uniting in, or contributing to, a crime, but not as chief actor. See accessory.

adj. Accompanying, as a subordinate; additional; accessory; esp., uniting in, or contributing to, a crime, but not as chief actor. See accessory.

n. One who, not being present, contributes as an assistant or instigator to the commission of an offense.

n. Same as accessory.

adj. aiding and abetting in a crime

n. someone who helps another person commit a crime

"Kerouac was arrested as an accessary to the killing in 1944 and was put in a Bronx jail but he was freed after his girlfriend, Edie Parker, stood bail."

supportive   

accessory   

or    being    commands    one    at    its    who    not    present    counsels   

additional    accessory   

neither-painful-nor-pleasant    well-entrenched    hairbreadth    anti-missile    nonfunctional    100-101    diradical    corroborative    adjuvant    parts