Kim Kardashian West will not tolerate anyone who comes after her famous family 鈥 which she proved when she responded in no uncertain terms to the rumors around Kylie Jenner鈥檚 reported pregnancy. In a new preview for season 14 of Keeping Up With the Kardashians, she takes on Caitlyn Jenner, whom she calls a 鈥渓iar鈥 and 鈥渘ot a good person.鈥

In the clip, the 36-year-old is chatting with her sisters, Kourtney and Khlo茅 Kardashian, when the topic of Jenner鈥檚 memoir, The Secrets of My Life, comes up.

Though the book was unpublished at the time of the taping, Kardashian West apparently got an alert about one passage that references her late father. 鈥淚t says in Caitlyn鈥檚 book, 鈥楻obert Kardashian knew O.J. Simpson was guilty, but joined the defense team to get back at his remarried ex. Robert told Caitlyn in secret after the O.J. murder trial that he believed his friend was guilty,'鈥 she tells her sisters, reading from her phone.

Khlo茅 immediately objects, saying, 鈥淭hat鈥檚 not true! Like, what?鈥 And Kourtney adds, 鈥淟ike, to sell a book, you鈥檙e gonna make something up?鈥

鈥淒ad so believed in him,鈥 Kardashian West says. 鈥淚t is so shady that Caitlyn came over and gave me the book, and then on the phone she said, 鈥榃ell, the final version has a few more things in it, but don鈥檛 worry, it鈥檚 nothing about you.鈥 So, she lied to me, 鈥檆ause that is about me, if it鈥檚 about our dad.鈥

Later, in a confessional, she admits that her relationship was Caitlyn was already 鈥渟trained,鈥 but that she was trying to be respectful. 鈥淏ut if you talk about my dad, I will cut you,鈥 she says clearly. Yikes.

鈥淚 have always had Caitlyn鈥檚 back,鈥 she tells her sisters. 鈥淏ut she is a liar. She is not a good person.鈥

You鈥檒l be able to see the drama for yourself when the season premiere of Keeping Up With the Kardashians airs on E! on Sunday at 9pm ET/PT.

What do you think about Kim Kardashian West鈥檚 comments? Let us know @BritandCo .

(Photo via E! Entertainment/YouTube)