From Wiktionary, the free dictionary
From proto- + feminist.
protofeminist (not comparable)
- Preceding but anticipating or laying the groundwork for feminism
1988 April 1, Lawrence Bommer, “Amelia Lives!”, in Chicago Reader[1]:As Shamas depicts her, Earhart is basically a one-note, protofeminist heroine who pursues adventure "for the fun of it."