leaderess|ˈliːdərɪs| Also 6 leadress(e. [f. leader1 + -ess.] A female leader. 1599Thynne Animadv. (1865) 74 They agree yt shoulde not be a ‘minoresse’, but a ‘mooveresse’ or leadresse of and to anger and yre.1888Daily News 9 Nov. 2/1 Mrs. K...a leader, or leaderess of the Ladies' Land League.