Wiktionary
n. (context idiomatic English) A noteworthy silence, or absence of response, especially one signifying disapproval or lack of enthusiasm.
Usage examples of "deafening silence".
The sound had died away, yet the air rang with a deafening silence.
Then, magically, they were gone, and there was only the sudden deafening silence and the flares, drooping slowly to extinction, lighting up the pall above the Ulysses, the dark clouds of smoke rolling up from the shattered Stirling and a tanker with its after superstructure almost gone.
Then, in the deafening silence that came after, he lifted his sword and came straight toward me.
My vision blackened, and a deafening silence filled my ears and shut out the boom-booming of my own heart in his other hand.
The roaring in his ears was actually a deafening silence, he realized, and the ground beneath him had not shuddered once with the impact of a falling bluetop.