Example: "The mind of the audience is becoming dulled"
To render dull; to remove or blunt an edge or something that was sharp.
Example: "Years of misuse have dulled the tools."
To soften, moderate or blunt; to make dull, stupid, or sluggish; to stupefy.
Example: "He drinks to dull the pain."
To lose a sharp edge; to become dull.
Example: "A razor will dull with use."
To render dim or obscure; to sully; to tarnish.