1. extremely loud; loud enough to make one temporarily unable to hear properly

Examples

• The deafening roar of the jet engines made conversation impossible.
• Thunder produced a deafening crash that shook the windows.
• The crowd’s deafening cheers echoed throughout the stadium.
• She covered her ears to block out the deafening noise from the construction site.
• The deafening silence that followed his announcement was uncomfortable.
• Fireworks created a deafening explosion of sound and light.