Desensitise, accustom (5)
I believe the answer is:
inure
(Other definitions for inure that I've seen before include "harden attitude" , "Harden or season" , "To give experience" , "Harden against, make tough" , "Come to accept" .)
I believe the answer is:
inure
(Other definitions for inure that I've seen before include "harden attitude" , "Harden or season" , "To give experience" , "Harden against, make tough" , "Come to accept" .)