Dr Evil produces sheer nonsense (6)
I believe the answer is:
drivel
'sheer nonsense' is the definition.
'drivel' can be an answer for 'nonsense' (drivel can mean nonsensical speech or writing). I'm unsure of the 'sheer' bit.
'dr evil produces' is the wordplay.
'produces' indicates an anagram.
'evil' with letters rearranged gives 'ivel'.
'dr'+'ivel'='DRIVEL'
Can you help me to learn more?
(Other definitions for drivel that I've seen before include "Tosh" , "Worthless talk" , "Gibberish" , "Stupid talk" , "Verbal nonsense, rubbish" .)