Attacked for having been extravagant (6,3)
I believe the answer is:
lashed out
'attacked' is the definition.
(I've seen this before)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for lashed out that I've seen before include "getting castigated" , "Spent extravagantly" , "Spent money freely" , "Was open-handed - or used one's fists?" , "struck at random" .)