Answer: libber

AnswerCrossword Clue
LIBBERAd-..
LIBBERBetty Friedan, for one
LIBBERERA proponent
LIBBERActivist of a sort
LIBBERFeminist, colloquially
LIBBERWomen's ...
LIBBERWomen's ..... (feminist)
LIBBERAd-...
libbera liberationist
libberadvocate, follower, or member of a social-reform liberation movement