IPA: //pɑːrˈteɪkər//
KK: /ˈpɑrˌteɪkər/
A person who takes part in or shares in something, such as an activity or event.
As a partaker in the community event, she helped organize the activities.
Partaker → It is formed from "part" (from Old French *part*, meaning a portion or share) and "-aker" (a suffix indicating a person who does something). The word "partaker" means a person who takes part in something or shares in an activity.
Think of someone who takes a 'part' in an event — that's what a partaker does.