In the first two seasons, he refers only to female demons and a killer ghost as a bitch.

In season three, he calls a demon or creature a bitch eleven times. He calls Bela a bitch four times, none of them to her face but all of them after she had done something wrong. And on one occasion he referred to Gert, the elderly woman who hit on Sam, as a broad.

I tried not to differentiate if I could help it because I was going by the standard that calling a woman a bitch/slut/whore/skank/broad is wrong, "deserved" or not.