deafening

deaf|en|ing /d'efənɪŋ/
1 [ADJ]
A deafening noise is a very loud noise.
...the deafening roar of fighter jets taking off.
2 [ADJ]
If you say there was a deafening silence, you are emphasizing that there was no reaction or response to something that was said or done.
When we ask people for suggestions we get a deafening silence.