The French female gets subordinate to do the washing (7)
I believe the answer is:
launder
'to do the washing' is the definition.
'the french female gets subordinate' is the wordplay.
'the french female' becomes 'la' (feminine version of 'the' in French).
'gets' means one lot of letters go next to another.
'subordinate' becomes 'under' (similar in meaning).
'la'+'under'='LAUNDER'
(Other definitions for launder that I've seen before include "Wash, starch and iron" , "Wash and iron clothes etc" , "address the filth in lucre?" , "Wash or cleanse, clothes or money" , "clean habits" .)