Female can notice inside information that's false (6)
I believe the answer is:
ladies
'information that's false' is the definition.
I can't judge whether this defines the answer.
'female can notice inside' is the wordplay.
'female can' becomes 'lies' (I can't explain this - if you can you should give a lot more credence to this answer).
'notice' becomes 'ad' (both can mean an advertisement).
'inside' is an insertion indicator.
'lies' placed around 'ad' is 'LADIES'.
Can you help me to learn more?
(Other definitions for ladies that I've seen before include "Females" , "Wives of knights" , "Lords' wives" , "Ideals for genteel women" , "...... and gentlemen" .)