...in effort to incorporate objective (6)
I believe the answer is:
trendy
'in' is the definition.
('in' can mean trendy or fashionable)
'effort to incorporate objective' is the wordplay.
'effort' becomes 'try' (synonyms).
'to incorporate' means one lot of letters goes inside another.
'objective' becomes 'end' (both can mean a purpose).
'try' going around 'end' is 'TRENDY'.
(Other definitions for trendy that I've seen before include "Up-to-date with the latest fad" , "Informally fashionable" , "With-it" , "In fashion, of popular style" , "Hot" .)