Greatly amuse, astonish, or thrill someone, as in This new song will knock them dead. This slangy hyperbolic expression was first recorded in 1889. Also see knock the socks off.
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Words nearby knock dead
Example sentences from the Web for knock dead
The cartoonist, better known as Charb, was shot dead Wednesday.
A policewoman was shot dead this morning while law enforcement searched for the Charlie Lebdo killers.
Absent a body, no one can say with absolute certainty whether Castro is dead, even if all signs point in that direction.
The two-state solution to the Israeli-Palestinian conflict is dead.In the Middle East, the Two-State Solution Is Dead|Dean Obeidallah|January 2, 2015|DAILY BEAST
Yes, Byrd—dead four-and-a-half years now—was a Kleagle in the Ku Klux Klan.Steve Scalise and the Right’s Ridiculous Racial Blame Game|Michael Tomasky|January 2, 2015|DAILY BEAST
A little boy of four was moved to passionate grief at the sight of a dead dog taken from a pond.Children's Ways|James Sully
When he plays a sonata it is as if the composition rose from the dead and stood transfigured before you.
To-day I'm more dead than alive, as we had a lesson from him yesterday that lasted four hours.
It is a fearsome thing for a man to be left alone in the dead of night with a young baby.The Joyous Adventures of Aristide Pujol|William J. Locke
If they are Ancients and dead then let them be buried and left to the archæological excavator.The Salvaging Of Civilisation|H. G. (Herbert George) Wells