Simulated feeding frenzy (7)
I believe the answer is:
feigned
'simulated' is the definition.
('feign' can be a synonym of 'simulate')
'feeding frenzy' is the wordplay.
'frenzy' indicates an anagram.
'feeding' anagrammed gives 'FEIGNED'.
(Other definitions for feigned that I've seen before include "Pretended to be affected by" , "Not genuine" , "Pretended, dissembled" , "Pretended to feel" .)