Young lady backed favourite - put a foot wrong! (7)
I believe the answer is:
misstep
'a foot wrong' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'young lady backed favourite' is the wordplay.
'young lady' becomes 'miss' (term of address for a young woman).
'backed' says the letters should be written backwards.
'favourite' becomes 'pet' (synonyms).
'pet' back-to-front is 'tep'.
'miss'+'tep'='MISSTEP'
'put' acts as a link.
Can you help me to learn more?
(Other definitions for misstep that I've seen before include "False move" , "Error" , "Badly judged footing" , "Badly judged move" , "bad move" .)