While you have the Deafened condition, you experience the following effect.
Deafened
Condition
Status Effect
Deafened
This condition changes how a creature can act, move, perceive, or interact with the world until the condition ends.
Rules
4
sections
Effects
Can't Hear
You can't hear and automatically fail any ability check that requires hearing.
Reference
Rules Availability
SRD 5.2
Basic Rules 2024