Learner's definition of DEAFENING
[more deafening; most deafening]
: extremely loud
◊ If there is a deafening silence or the silence is deafening, there is a lack of sound or speech that is very noticeable.
The silence was deafening as they both sat there stubbornly refusing to apologize.
As the controversy rages on, the deafening silence from the White House is drawing increasing criticism.