dull the edge of (something)

dull the edge of (something)

To lessen some aspect of something, often so that it is less severe or effective. Likened to dulling the edge of a blade. Unfortunately, there is little we can do to dull the edge of such an emotional issue.
See also: dull, edge, of
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

dull the edge of

make less sensitive, interesting, or effective.
The image here is of making a knife's edge blunt.
See also: dull, edge, of
Farlex Partner Idioms Dictionary © Farlex 2017
See also: