Vegetarian somewhat flipping furious (5)
I believe the answer is:
irate
'furious' is the definition.
(I know that furious can be written as irate)
'vegetarian somewhat flipping' is the wordplay.
'somewhat' indicates the answer is hidden within the clue.
'flipping' is a reversal indicator.
'etari' is hidden in the letters of 'vegetarian'.
'etari' backwards is 'IRATE'.
(Other definitions for irate that I've seen before include "Magical rod" , "ranting" , "raging" , "Cross, irritated" , "Not happy" .)