In latest style, attempt to secure outcome (6)
I believe the answer is:
trendy
'in' is the definition.
('in' can mean trendy or fashionable)
'attempt to secure outcome' is the wordplay.
'attempt to' becomes 'try' (I've seen this in other clues).
'secure' indicates putting letters inside (inserted letters are secured inside).
'outcome' becomes 'end' (I've seen this in other clues).
'try' going around 'end' is 'TRENDY'.
'latest style' is the link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for trendy that I've seen before include "Voguish" , "Chic (colloq.)" , "In fashion, of popular style" , "In accordance with the latest fad" , "Cool" .)