Answer: dulls

AnswerCrossword Clue
DULLSMakes blunt
DULLSMakes less sharp, as a blade
DULLSDeadens
DULLSLoses sharpness
DULLSNumbs
DULLSWashes out
DULLSTakes the edge off
DULLSBecomes blunt
DULLSMakes blunt.
DULLSBlunts.
DULLSWith ville, a complete bore
DULLSMuffles
DULLSBlunts
DULLSTakes away an edge
dullsMake or become dull or less intense
dullsDULL, to blunt (to make dull)