Least fresh? Not fresh at all (5)
I believe the answer is:
stale
'not fresh at all' is the definition.
I can't tell whether this defines the answer.
'least fresh?' is the wordplay.
'fresh?' indicates anagramming the letters (a fresh re-ordering of the letters).
'least' is an anagram of 'STALE'.
Can you help me to learn more?
(Other definitions for stale that I've seen before include "Boring" , "no longer bearing interest?" , "Musty - out of date" , "past the sell-by date" , "Musty or hackneyed" .)