Female and Parisian in utter security (6)
I believe the answer is:
safety
'security' is the definition.
(being secure is being safe)
'female and parisian in utter' is the wordplay.
'female' becomes 'f' (abbreviation).
'and parisian' becomes 'et' ('and' in French).
'in' means one lot of letters goes inside another.
'utter' becomes 'say' (to utter something is to speak or say it).
'f'+'et'='fet'
'fet' inserted within 'say' is 'SAFETY'.
(Other definitions for safety that I've seen before include "Protection" , "Freedom from risk or danger, or an acrobat's net" , "Security; sanctuary" , "Absence of danger" , "The condition of being free from danger" .)