Freshest (6)
I believe the answer is:
newest
'freshest' is the definition.
('new' is associated in meaning with 'fresh')
This is the entire clue.
(Other definitions for newest that I've seen before include "most up-to-date" , "Superlatively modern" , "Most recent or most fashionable" , "Freshest, most modern" , "Most original" .)