Dickens is so naff, too (11)
I believe the answer is:
euphemistic
'naff too' is the definition.
I can't tell whether this definition defines the answer.
'dickens is' is the wordplay.
I cannot really understand how this works, but
'is' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
'so' acts as a link.
Can you help me to learn more?
(Other definitions for euphemistic that I've seen before include "Using innocuous word for an unpleasant one" , "Using a milder term for something unpleasant" , "Replacing unpleasant term with a milder one" , "Using a mild term for something stronger" , "Substituting for a harsher or blunter word" .)