Adjective
out cold (not comparable)
Entirely asleep or unconscious.
I apologize for Pam. I accidentally hit her in the head with a baseball when we were in fifth grade and knocked her out cold. She's never been right since. (Tory) Sherrilyn Kenyon
I've never seen a truly great fighter get knocked onto the ropes unconscious... knocked out cold before... and I saw Roy Jones get knocked out twice in a row. Jim Lampley
I hit Damian Fuller with a left hook that left him laid out for 30-45 minutes. They brought oxygen to him, they couldn't wake him up, he was out cold. The television station kept having to take breaks, he was out so long. It was unbelievable. That was the best one-shot I've ever done in my life. Diego Corrales
We went on stage with the Jefferson Airplane, Jim started singing with Grace Slick and hugging her. Then he danced off the stage, went back into the dressing room and passed out cold. Ray Manzarek
There are five issues that make a fist of a hand that can knock America out cold. They're lack of jobs, obesity, diabetes, homelessness, and lack of good education. will.i.am
After the planet exploded, Galactus was knocked out cold, the D'Bari settled on another planet, and Iron Man returned to normal. Source: Internet