Kourtney Kardashian is not holding back what she thinks about her sister Khloé Kardashian's ex Tristan Thompson.

On the latest episode of "The Kardashians," Kourtney revealed her grievances surrounding the Cleveland Cavaliers player and that her daughter Penelope Disick shares similar sentiments, as reported by PEOPLE.

"I feel like she gets it from me," Kourtney explained after she asked Penelope if it was okay for Tristan to come visit with Khloe. "I told her the first day of school, I was so triggered by him ... I know why, but I feel like we all brush it off and are fine, and then I was just so triggered, and I was like, 'I just can't do it anymore.'"

Still, she had more to get off her chest.

"Tristan has made horrible decisions and choices with my sister," she said during a confessional in the episode. "There's times when I'm so triggered by him I can't be around him and then there's times when I just let it go because we just want harmony and, you know, he's the father of my niece and nephew."

Later in that episode, Khloé and Tristan arrived at her sister’s home, where she opened up on where she stood with the NBA star, whom she shares two kids: daughter True, 5, and son Tatum, 13 months.

"I"m really proud of myself for where me and Tristan are and how I am able to allow him to be the father he wants to be," she said. "But where I am at with Tristan has nothing to do with what I expect my family members to do. If Penelope has feelings about Tristan, rightfully so. And good for you, girl."

She added, “I want Penelope to have these feelings and I don’t wanna talk her out of them because I don’t want this behavior to be something that I'm validating or I'm justifying. I want her to know that how she feeling is the right way to feel. We should not accept someone treating us like this."

Kourtney’s admission comes weeks after her sister Kim Kardashian said she believes Thompson is a “good” person.

"I know you guys are gonna hate me for this, and you're gonna hate us, and you're gonna think Khloé's whatever," she noted. "It's so crazy because he's such a good friend and he's such a good dad, but he just couldn’t get it together in that area of being a faithful boyfriend."