Most wild adult tigers shot after noon (8)
I believe the answer is:
angriest
'most wild' is the definition.
('angry' can be a synonym of 'wild')
'adult tigers shot after noon' is the wordplay.
'adult' becomes 'a' (abbreviation).
'shot' is an anagram indicator.
'after' is a charade indicator (letters next to each other).
'noon' becomes 'n' (abbreviation for noon).
'tigers' anagrammed gives 'griest'.
'griest' after 'n' is 'ngriest'.
'a'+'ngriest'='ANGRIEST'
(Other definitions for angriest that I've seen before include "Most characteristic of 1950s young men" , "Most wrathful" , "Most irate and furious" , "Most annoyed or hostile" , "Extremely mad" .)