Monkeys' taboos (5)
I believe the answer is:
evils
'monkeys' taboos' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for evils that I've seen before include "Iniquities" , "Sins and depravities" , "immoral actions" , "Lives (anag.)" , "transgressions" .)