New Delhi bad, or unsentimental (4-6)
I believe the answer is:
hard-boiled
'unsentimental' is the definition.
(I've seen this before)
'new delhi bad or' is the wordplay.
'new' indicates an anagram.
'delhi'+'bad'+'or'='delhibador'
'delhibador' anagrammed gives 'HARD-BOILED'.
(Other definitions for hard-boiled that I've seen before include "Tough (as an egg can be?)" , "Unsentimental" , "Cynical" , "denying entry to soldiers?" , "way to serve an egg?" .)