verb.
To reduce the edge or effects of; to mitigate; to dull.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
verb.
reduce the edge or violence of
Word Usage
"Here Claudia formed the habit of drinking much more wine than was good for her: and she did it to blunt her sensibility; to obtund the sharpness of her heartache; to give her sleep."