agitator

باللغة العربية: مُحَرِّض، مُهَيِّج، خَلَّاط

1. One who agitates; one who stirs up or excites others, for example political reformers. · Near-synonyms: instigator; see also Thesaurus:troublemaker
2. An implement for shaking or mixing.
3. One of a body of men appointed by the army, in Oliver Cromwell's time, to look after their interests.

الجمع agitators