Warmth, affection (10)
I believe the answer is:
tenderness
This clue is a double definition.
'warmth' is the first definition.
(tenderness is a kind of warmth)
'affection' is the second definition.
(synonyms)
(Other definitions for tenderness that I've seen before include "sore?" , "Gentleness, sensitivity" , "Heart" , "Compassion" , "Gentle quality" .)