### Clue: Relative's latest wife leaves, thank goodness! (6)
### Answer: NEPHEW 
 ### Explanation: Definition: Relative
 "new"(of recent origin, including the latest, as in "the new book from writer….") **minus**(… leaves) "w"(abbrev. for "wife") + PHEW(thank goodness!;an expression of relief – but if expressed differently, an expression of disgust).