Britney Spears has lashed out at Kevin Federline, declaring: "He hates me".

The Toxic singer took to social media to slam her ex-husband's memoir again, declaring Kevin "hated" and was "humiliating" her with his claims she had taken cocaine while breastfeeding their sons.

"I 100 percent beg to differ the way he is literally attacking me in his interviews," Britney, 43, wrote in a lengthy statement posted to X.

"If you really love someone then you don't help them by humiliating them."

The pop star described Kevin, 47, as having suffered from an anger management problem that scared her and which she said was "way worse" than the public knew.

"What scared me was how serious and angry he got, people have no idea, it is way worse than anyone could imagine," Britney wrote.

"Why is HE SO ANGRY... The boy hates me and it is deep anger to literally say the things he is saying."

The singer also accused Kevin of writing his tell-all memoir You Thought You Knew in a bid to raise funds as he no longer received child-support payments for their sons Sean Preston, 20, and Jayden James, 19.

"No money from Britney for 5 years," she wrote. "You trying to get paid... your kids are adults it's a different world now."