Dad wanted to know what an epikorsit was. Well it's a Hebraized female version of apikorus, heretic. Although as Dad points out, you actually have to have been religious and to have opted out, to be an apikorus, and that hasn't happened to me, although Mum did schlep me to shul, to be bored silly, on a regular basis, when we were living in England, and I used to fast on Yom Kippur till I met Bish , who is a real apikorus.