A woman with the morals of a man, per the Urban Dictionary, 4 letters
Jane, you ignorant ___, 4 letters
Jane, you ignorant ___ (old SNL line), 4 letters
Floozy, 4 letters
He or she gives it up, 4 letters
Hussy, 4 letters
Slattern, 4 letters
Slovenly woman, 4 letters
Strumpet, 4 letters
Trollop, 4 letters
They get around, 5 letters
Champion figure skater Irina, 9 letters