instigator
/ˈɪnstəˌɡeɪtɚ/ noun C2- A person who intentionally instigates, incites, or starts something, especially one that creates trouble. · Near-synonyms: see Thesaurus:troublemaker
Plural instigators
From the library
“What has become of Danglars, the instigator, and therefore the most guilty?”
I suspect a hoax is intended, but the instigators of it little knew whom they had to deal with.
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