Dictionary.com

dead from the neck up

Extremely stupid, as in That news commentator sounds dead from the neck up. This expression alludes to being “brain-dead.” [Early 1900s]

QUIZZES

BECOME A PRO CHEF WITH THIS EXQUISITE CUISINE QUIZ!

Even if you can't be a professional chef, you can at least talk like one with this vocabulary quiz.
Question 1 of 9
You may have read the word "simmer" in a recipe or two, but what does it really mean?
To cook in water that begins cold and then reaches a boil.
To stew in a sauce for a long time.
To cook in water, just below boiling temperature.
TAKE THE QUIZ TO FIND OUT

Words nearby dead from the neck up

deadeye, deadfall, dead fingers, dead firing, dead freight, dead from the neck up, dead hand, deadhead, Dead Heart, dead heat, dead horse
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.