Deaden (verb)

To make less intense, or to dull or numb.

Origin:

Derived from the adjective 'dead' meaning no longer alive or active.

Examples:

1. The painkiller was designed to deaden the pain in his injured arm.
2. The insulation was added to deaden the sound in the room.
3. The long journey deadened her senses.
4. The music was turned down to deaden the noise in the room.
5. The alcohol deadened his inhibitions and he began to dance.