Pro-lifer Kelsey Grammer regrets not speaking out more when his 1974 girlfriend had an abortion.

The actor talked about how two of his previous partners have had abortions in his new memoir, “Karen: A Brother Remembers,” which is centered around the brutal rape and murder of his younger sister.

“I know that many people do not have a problem with abortion, and though I have supported it in the past, it eats away at my soul,” the “Frasier” star, 70, writes.

Grammer goes on to explain that, while he was studying at The Juilliard School in 1974, his live-in girlfriend became pregnant.

Despite telling her that he was “willing” to keep the baby, he writes, “I never wanted her to accuse me of being unwilling to have the child, but I also did not plead with her to save his life.”

“I supported the idea that a woman has the right to do what she wants with her own body. I still do. But it was hard for me. Still is.”

The Emmy winner further admits that he believes a woman has autonomy over their own body, but adds, “A child’s right to exist? Of course. Life.”

“Six months before my sister was slaughtered, I volunteered to have my son’s body vacuumed out of his mother’s. I regret it,” he notes, referencing his sister, Karen, who died in 1975 at 18.

He went on to criticize the “so-called doctors, who have executed generations of children in this manner.”

“I have no idea how they call themselves doctors. But I offer no controversy,” he adds.

Years later, Grammer faced the same decision when his fourth and current wife, Kayte Walsh, was pregnant with fraternal twins.

At 13 weeks, the male fetus’s sacs ruptured, and the “so-called doctors” told the couple that “his continued growth without the safety of his amniotic fluid would surely kill him.”

Under the threat that the potential leakage would also probably kill the female fetus, the duo decided to abort the male one. Kayte later safely delivered a girl named Faith.

“We killed him. Our son. We killed our son so Faith might live. We wept as we watched his heart stop. Saw it. It is the greatest pain I have known,” he writes.

The “Cheers” alum has welcomed seven children with four different women, including two with “Real Housewives of Beverly Hills” alum Camille Grammer.

He previously admitted that he has had “some failings” as a parent, including an estrangement with his oldest daughter, Spencer.

“Karen: A Brother Remembers” is available for purchase now.