Young lady, fur is wrong (8)
I believe the answer is:
misspelt
'wrong' is the definition.
The answer and definition are not the same part of speech. However, past participle verbs and adjectives can occasionally define each other.
'young lady fur' is the wordplay.
'young lady' becomes 'miss' (term of address for a young woman).
'fur' becomes 'pelt' (synonyms).
'miss'+'pelt'='MISSPELT'
'is' acts as a link.
Can you help me to learn more?
(Other definitions for misspelt that I've seen before include "literal?" , "Having some dodgy characters present" , "at least one letter out" , "like velvit?" , "having put letters in wrong order" .)