Wife that is fatter than anyone? (6)
I believe the answer is:
widest
'fatter than anyone?' is the definition.
I can't tell whether this definition defines the answer.
'wife that is' is the wordplay.
'wife' becomes 'w' (abbreviation).
'that is' becomes 'id est' ('that is' in Latin).
'w'+'idest'='WIDEST'
Can you help me to learn more?
(Other definitions for widest that I've seen before include "most spacious" , "most off target" , "showing maximal gap between sides" , "least slim" , "Most broad" .)