noun
ADJECTIVE
▪ full
▪ active , passive
▪
We want people to become active ~s in the political process.
▪ unwilling , willing
▪
She was an unwilling ~ in his downfall.
▪ volunteer ( AmE )
▪ enthusiastic
▪ interested , potential , prospective
▪ eligible
▪ regular
▪
She's a regular ~ in the show.
▪ key , leading , main , major
▪ individual
▪ fellow
▪
He was talking with fellow ~s before the competition.
▪ course , programme/program , workshop
▪ focus-group , research , study , survey , trial
▪ conference , forum , seminar , summit , symposium
▪ chat
▪
online chat ~s
VERB + PARTICIPANT
▪ attract
▪
Protests on Monday attracted thousands of ~s.
▪ select
▪ ask , instruct
▪
The ~s were asked to indicate their attitudes to science.
▪ interview
▪ debrief
PARTICIPANT + VERB
▪ attend sth
▪ experience sth
▪ describe sth , indicate sth , report sth , state sth
▪ rate sth
▪ range from sth to sth
▪
Participants ranged in age from 35 to 55.
PREPOSITION
▪ ~ in
▪
an active ~ in the discussion