Quick to embrace single female and soothe (6)
I believe the answer is:
pacify
'soothe' is the definition.
(I've seen this in another clue)
'quick to embrace single female' is the wordplay.
'quick' becomes 'pacy'.
'to embrace' means one lot of letters goes inside another.
'single' becomes 'i' (one).
'female' becomes 'f' (common abbreviation).
'i'+'f'='if'
'pacy' placed around 'if' is 'PACIFY'.
'and' is the link.
(Other definitions for pacify that I've seen before include "Make calmer" , "Soothe - appease" , "Mollify, appease" , "Make calm, soothe" , "Placate, calm" .)