Lad’s hood, fine, unexpectedly retro? (3-9)
I believe the answer is:
old-fashioned
'retro?' is the definition.
(retro means reminiscent of past fashions)
'lad's hood fine unexpectedly' is the wordplay.
'unexpectedly' is an anagram indicator.
'lads'+'hood'+'fine'='ladshoodfine'
'ladshoodfine' anagrammed gives 'OLD-FASHIONED'.
(Other definitions for old-fashioned that I've seen before include "Outdated" , "like those of yore?" , "Cocktail made with whiskey, bitters, sugar and fruit" , "Outmoded - 1 down" , "Pass" .)