WordNet: contestant, dissenter, dissident, objector, protester

a person who dissents from some established policy

• hypernym individual, mortal, person, somebody, someone, soul

• hyponym CO, conscientious objector

• hyponym nonconformist, recusant

• hyponym political dissident

• hyponym NIMBY

contestant

• (suomi) vastaehdokas (synonyymi; <unconfirmed/>)

dissenter

• (englanti) dissent (derivationally related)

• (englanti) dissent (derivationally related)
• (suomi) toisinajattelija (synonyymi)

dissident

• (englanti) dissident (derivationally related)

• (englanti) dissident (derivationally related)
• (suomi) dissidentti (synonyymi)

• (suomi) toisinajattelija (synonyymi)

objector

• (englanti) object (derivationally related)
• (suomi) vastustaja (synonyymi)

protester

• (englanti) protest (derivationally related)

• (englanti) protest (derivationally related)
• (suomi) protestoija (synonyymi)