At the end of the day, so very soft and sentimental (5)
I believe the answer is:
soppy
'sentimental' is the definition.
(I know that sentimental can be written as soppy)
'at the end of the day so very soft' is the wordplay.
'at' is a charade indicator (letters next to each other).
'the end of the' indicates one should take the final letters.
'very soft' becomes 'pp' (musical abbreviation for pianissimo).
The last letter of 'day' is 'y'.
'so'+'pp'='sopp'
'y' after 'sopp' is 'SOPPY'.
'and' acts as a link.
(Other definitions for soppy that I've seen before include "Overly sentimental" , "Silly" , "Emotional" , "Feebly sentimental" , "Wet; sentimental" .)