participatorparticipant
The term "participatorparticipant" is not a standard or recognized term in any common lexicon. It appears to be a concatenation of two identical words, "participator" and "participant." A participator is someone who participates, and a participant is also someone who takes part in something. Therefore, "participatorparticipant" essentially refers to an individual who is actively involved in an activity, event, or process.
In a theoretical context, one might consider a "participatorparticipant" to emphasize a heightened or dual role