A hunter is anyone who hunts. The Huntress is the greatest.
Tress is the greatest, the expert.
Let all people on stage be actors. Let the greatest be the actress. (Olivier and and Streep e.g.)
Let all people who edit be editors. Let Bob Silvers be the editress.
Let Robert Lowell and Sylvia Plath both be poets and poetesses.
Ess -tress the best