To cream off pay with no answer is revealing (6)
I believe the answer is:
skimpy
'is revealing' is the definition.
(I've seen this before)
'to cream off pay with no answer' is the wordplay.
'to cream off' becomes 'skim' ('skim' can be a synonym of 'cream off').
'with no' indicates named letters should be taken away.
'answer' becomes 'a' (abbreviation eg in Q and A).
'pay' with 'a' removed is 'py'.
'skim'+'py'='SKIMPY'
(Other definitions for skimpy that I've seen before include ", naughty thing, the blue skirts?" , "Inadequate (of clothing)" , "Providing little coverage" , "'Scanty, barely enough (6)'" , "Having hardly enough" .)