If its family members i stop short of the nuclear whore word
and merely tear down their character, self obsessed narcissistic witch kind of comment, it does the job of shutting them up, remember its not only the words but the rhythm and agression and lyrical skill you rap them into the ground with as well, the sheer weight of skilled insults put together can decimate them.
Also dont fall into the trap, some girls know they are a bitch and wear it like a badge of honour, calling them this doesnt have an effect they to some degree want YOU to call them a bitch
also no woman likes to be called in any context;
fat
dumb
ugly
attacks on these topics in variation fuck them up no matter what they are behaving like they get shook inside
i reserve the nuclear word for foids outside this realm, who really fuck you over, and even then a last resort as it sounds kind of desperate to dig this low, if she goes this low i will.
However it shows some skill to tear the bitches down without resorting to the slut or whore end game, unless of course she is blatantly behaving like a whore