About the French kiss — it’s sloppy (8)
I believe the answer is:
careless
'sloppy' is the definition.
(synonyms)
'about the french kiss it's' is the wordplay.
'about' indicates putting letters inside.
'the french' becomes 'les' (les is the in french).
'kiss' becomes 'car' (I can't justify this - if you can you should believe this answer much more).
'it's' becomes 'es' ('e' can mean 'electronic' which is similar to 'IT').
'car'+'es'='cares'
'les' placed within 'cares' is 'CARELESS'.
Can you help me to learn more?
(Other definitions for careless that I've seen before include "Thoughtless, remiss" , "Negligent - nonchalant" , "Inattentive to risk" , "Not paying enough attention" , "Slipshod" .)