Reduce, as fears (5)
I believe the answer is:
allay
(Other definitions for allay that I've seen before include "Diminish or end (fears)" , "Marks of blows" , "Diminish (concerns)" , "Quell" , "Mitigate" .)
I believe the answer is:
allay
(Other definitions for allay that I've seen before include "Diminish or end (fears)" , "Marks of blows" , "Diminish (concerns)" , "Quell" , "Mitigate" .)