The word "deafening" refers to something that is so loud or overwhelming that it can be heard even by someone who is deaf. It describes a sound, noise or commotion that is extremely intense and powerful, often causing discomfort or pain to the ears of those exposed to it. The term "deafening" can also refer to something that is so overwhelming in magnitude or impact that it effectively drowns out all other sounds or distractions, making it difficult for someone to ignore or not notice it.