Comparative form of dead: more dead; or at least more evidently dead.(adjective)
One who is deceased, or will shortly become so.(noun)
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Use "deader" in a sentence
"The real debate within Republican circles was whether he'd be "deader" if he stood by RomneyCare or if he renounced it."
"Durzo can be a shadow when he wants to be and no "deader" ever escapes their destiny when Durzo has been hired to do the killing."
"The Squash Racquets black ball is so much "deader" that the player usually has to go back first and then forward somewhat in order to be in the proper position to hit the ball as it rebounds off the back wall."