Makes tolerable (5)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
eases
'makes tolerable' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for eases that I've seen before include "Borders, margins" , "Relieves, lightens" , "provides relief" , "Relieves, loosens" , "Softens" .)