She's the one few are wrong about (4)
I believe the answer is:
wife
'she's' is the definition.
Both the answer and definition are singular nouns.
Perhaps they are linked in a way I don't understand?
'one few are wrong about' is the wordplay.
'one' becomes 'i' (Roman numeral).
'are wrong' is an anagram indicator.
'about' is an insertion indicator.
'few' anagrammed gives 'wfe'.
'i' going into 'wfe' is 'WIFE'.
'the' is the link.
Can you help me to learn more?
(Other definitions for wife that I've seen before include "Dutch (slang)" , "Husband's partner" , "Better half" , "Spouse" , "Hubby's other half" .)