WordNet: interpreter, representative, spokesperson, voice

an advocate who represents someone else's policy or purpose; "the meeting was attended by spokespersons for all the major organs of government"

• hypernym advocate, advocator, exponent, proponent

• hyponym ambassador

• hyponym flack, flack catcher, flak, flak catcher

• hyponym mouth, mouthpiece

• hyponym spokesman

• hyponym spokeswoman

• hyponym bagman, commercial traveler, commercial traveller, roadman, traveling salesman, travelling salesman

interpreter

• (suomi) esittäjä (lähes synonyymi)

representative

• (suomi) asiamies (synonyymi)

spokesperson

• (suomi) tiedottaja (synonyymi)

voice

• (suomi) edustaja (synonyymi)